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£1,499.99
  • Bolster Armouries L403A1/KS-1 Replica
  • Gate TITAN MOSFET & Warhead 36K CNC Black Motor
  • Hand-assembled and tuned to perfection

Built on the bedrock of 21 highly successful previous Bolster Armouries releases, the AEGIS Advanced M4 AEG is Bolster's first foray into high-end military-style replicas. The AEGIS marries the peak performance and phenomenal effect on target provided by the ONYX series with a new external form patterned after a highly advanced real steel AR-15 rifle every British Military buff should instantly recognise.

Starting with the G&G SR15 E3 AEG, a licenced replica of the Knights Armament Company SR15 with superb quality core parts, the AEGIS is styled to closely replicate the latest service rifle of the British Armed Forces, the L403A1 aka the KS-1 Rifle. The real steel KS-1 is currently in the trials and development stage and the Airsoft market doesn't yet cater for those who want to build one in AEG form. If you want to be one of the first in the country rocking a KS-1 AEG, here is your chance.

With a very limited pool of appropriate external parts available, replicating the KS-1 was Bolster's biggest challenge yet. A custom 13.7-inch dimpled outer barrel was commissioned and paired with the Airsoft Artisan L403A1/KS-1 URX 6 M-LOK Handguard, the Angry Gun QDC/MCQ-PRT suppressor, an authentic Magpul CTR stock and the universally-loved PTS Syndicate EPG pistol grip. The result is as close to a real KS-1 as you'll get using AEG parts, ideal for the Milsim-oriented skirmisher who likes to lead the pack!

As is the standard set by Bolster Armouries, almost none of the G&G internal parts remain; everything found to be suboptimal has been removed and replaced with the very best aftermarket upgrades available. Parts from Laylax Prometheus, Warhead Industries, RetroArms, FPS Soltair, Gate Electronics along with other big names in the high-end Airsoft aftermarket feature inside, and the result is every bit as impressive as previous game-changing Bolsters. Despite its Milsim leaning, the AEGIS discretely telegraphs its upgraded internals thanks to its unique Gate NOVA CNC trigger finished in Bolster Armouries Violet.

While sourcing the right upgrade parts is one thing; installation, fine-tuning and R&D are a different story. With Bolster Armouries, you can shoot with confidence, knowing your primary was assembled and tuned by talented and proven techs who take pride in their work and simply will not let anything less than perfection leave the workbench.

Affirming the team’s confidence in its builds, the Bolster Armouries Dedicated After-sales Service Programme supplied with each Bolster AEG has you covered for 24 months from the date of purchase, meaning the unparalleled performance of the AEGIS when it hits the sand will be maintained in the long term.

From £149.99
  • Tightbore inner barrel with Rotary HOP-up
  • Includes 3 Mid-cap mags, 2 Batteries, a Charger & 1000 BBs
  • Patrol Base X Delta Armory starter set

Looking for the perfect Christmas gift for someone you know or thinking of getting into the hobby for the first time? You need an affordable bundle featuring crucial Airsoft equipment and gear you need to get started on the battlefield. This package comes with a Delta Armory DA-C05 AEG, 3 mid-cap magazines, 2 batteries, a UK 3-pin charger and 1000 match-grade quality 0.2g BBs.

Although there are other cheaper bundles available, they do not compare to this. For £150, you are getting a full rifle loadout ready for skirmishing. The Delta Armory DA-CO5 is a well-established platform, known for its high-quality build, state-of-the-art internals and effective performance. 

This rifle is the perfect entry point to the hobby of Airsoft, the DA-C05 Patrol Base starter bundle was put together to help new players get skirmishing without any worries about compatibility! You can be sure to start your Airsoft journey on a high and become a skirmish specialist in no time with the Patrol Base Starter Bundle!

The DA-C05 Patrol Base Starter bundle comes with 3 magazines, 2 batteries, a UK 3-pin charger and 1000 match grade 0.2g BBs, equipping you for the Airsoft battlefield at an unbeatable price. The DA-C05 is a well-regarded M4 AEG platform which is remarkably well equipped for the price point; boasting a tightbore inner barrel, Psionics Berserker HOP-up bucking, quick change spring system and a smooth running gearbox with steel gears running on 7mm bushings. On the outside, this thing is bristling with 20mm Picatinny rails and is ready for any accessories you want to add, but works fantastically as it comes!

From £149.99
  • Tightbore inner barrel with Rotary HOP-up
  • Includes 3 Mid-cap mags, 2 Batteries, a Charger & 1000 BBs
  • Patrol Base X Delta Armory starter set

Looking for the perfect Christmas gift for someone you know or thinking of getting into the hobby for the first time? You need an affordable bundle featuring crucial Airsoft equipment and gear you need to get started on the battlefield. This package comes with a Delta Armory DA-C05 AEG, 3 mid-cap magazines, 2 batteries, a UK 3-pin charger and 1000 match-grade quality 0.2g BBs.

Although there are other cheaper bundles available, they do not compare to this. For £150, you are getting a full rifle loadout ready for skirmishing. The Delta Armory DA-CO5 is a well-established platform, known for its high-quality build, state-of-the-art internals and effective performance. 

This rifle is the perfect entry point to the hobby of Airsoft, the DA-C05 Patrol Base starter bundle was put together to help new players get skirmishing without any worries about compatibility! You can be sure to start your Airsoft journey on a high and become a skirmish specialist in no time with the Patrol Base Starter Bundle!

The DA-C05 Patrol Base Starter bundle comes with 3 magazines, 2 batteries, a UK 3-pin charger and 1000 match grade 0.2g BBs, equipping you for the Airsoft battlefield at an unbeatable price. The DA-C05 is a well-regarded M4 AEG platform which is remarkably well equipped for the price point; boasting a tightbore inner barrel, Psionics Berserker HOP-up bucking, quick change spring system and a smooth running gearbox with steel gears running on 7mm bushings. On the outside, this thing is bristling with 20mm Picatinny rails and is ready for any accessories you want to add, but works fantastically as it comes!

From £149.99
  • 6.03mm Tightbore inner barrel
  • Pre-upgraded version 2 gearbox
  • High density polymer construction

If you're just starting your Airsoft journey and looking for an affordable lightweight polymer build M4/AR-15 AEG with programmable fire controls, the Delta Armory DA-C05-EGL CHARLIE™ Silent Ops 7 M4/AR-15 AEG is what you need. This M4/AR-15 AEG boasts the latest MOSFET/ETU system from Delta Armory, known as the EAGLE™.

The internals of the DA-C05-EGL are similar to the original CHARLIE™ series, but the EAGLE™ ETU adds a whole new level of functionality. Using only the trigger and fire selector of the gun itself, you can program the EAGLE™ for burst modes of various duration, binary trigger, sniper delay, semi-auto only, AUG mode, pre-cocking, trigger sensitivity and active braking, giving you an incredibly advanced primary, for an entry-level price!

For those seeking a lightweight, yet advanced starter AEG with reinforced internal parts and full compatibility with aftermarket M4/AR-15 AEG upgrades, the Delta Armory DA-C05-EGL CHARLIE™ Silent Ops 7 M4/AR-15 AEG is one to watch!

From £149.99
  • 6.03mm Tightbore inner barrel
  • Pre-upgraded version 2 gearbox
  • High density polymer construction

If you're just starting your Airsoft journey and looking for an affordable lightweight polymer build M4/AR-15 AEG with programmable fire controls, the Delta Armory DA-C05-EGL CHARLIE™ Silent Ops 7 M4/AR-15 AEG is what you need. This M4/AR-15 AEG boasts the latest MOSFET/ETU system from Delta Armory, known as the EAGLE™.

The internals of the DA-C05-EGL are similar to the original CHARLIE™ series, but the EAGLE™ ETU adds a whole new level of functionality. Using only the trigger and fire selector of the gun itself, you can program the EAGLE™ for burst modes of various duration, binary trigger, sniper delay, semi-auto only, AUG mode, pre-cocking, trigger sensitivity and active braking, giving you an incredibly advanced primary, for an entry-level price!

For those seeking a lightweight, yet advanced starter AEG with reinforced internal parts and full compatibility with aftermarket M4/AR-15 AEG upgrades, the Delta Armory DA-C05-EGL CHARLIE™ Silent Ops 7 M4/AR-15 AEG is one to watch!

From £129.99
  • 6.03mm Tightbore inner barrel
  • Pre-upgraded version 2 gearbox
  • High-density polymer construction

If you're in the market for an affordable M4/AR-15 AEG with programmable fire controls and a lightweight polymer build, the Delta Armory DA-C06 CHARLIE™ Silent Ops M4/AR-15 AEG is what you need. This integrally suppressed M4/AR-15 is rocking the sneaky "Honey Badger" look and is equipped with a quad rail handguard for all your accessory needs. Unlike a real suppressor, the integral example installed on the DA-C06 CHARLIE™ serves to conceal an extended 6.03mm tightbore inner barrel, giving this short and sneaky-looking platform surprising long-range effectiveness. 

As with the other offerings in the Delta Armory CHARLIE™ range, the tightbore inner barrel is paired with a rotary HOP-up unit, and a pre-upgraded gearbox featuring an SHS tappet plate and piston, 7mm bushings and a quick change spring guide. This gives you a respectable pre-upgraded feature set straight out of the box, with plenty of room for further upgrades thanks to full Tokyo Marui compatibility. Whether you are new to the sport or a veteran skirmisher looking for a sneaky backup platform, the Delta Armory DA-C06 is the best AR in this style and price range we have seen!

From £129.99
  • 6.03mm Tightbore inner barrel
  • Pre-upgraded version 2 gearbox
  • High-density polymer construction

If you're in the market for an affordable M4/AR-15 AEG with programmable fire controls and a lightweight polymer build, the Delta Armory DA-C06 CHARLIE™ Silent Ops M4/AR-15 AEG is what you need. This integrally suppressed M4/AR-15 is rocking the sneaky "Honey Badger" look and is equipped with a quad rail handguard for all your accessory needs. Unlike a real suppressor, the integral example installed on the DA-C06 CHARLIE™ serves to conceal an extended 6.03mm tightbore inner barrel, giving this short and sneaky-looking platform surprising long-range effectiveness. 

As with the other offerings in the Delta Armory CHARLIE™ range, the tightbore inner barrel is paired with a rotary HOP-up unit, and a pre-upgraded gearbox featuring an SHS tappet plate and piston, 7mm bushings and a quick change spring guide. This gives you a respectable pre-upgraded feature set straight out of the box, with plenty of room for further upgrades thanks to full Tokyo Marui compatibility. Whether you are new to the sport or a veteran skirmisher looking for a sneaky backup platform, the Delta Armory DA-C06 is the best AR in this style and price range we have seen!

From £229.99
  • Full metal construction 
  • EAGLE™ MOSFET/ETU Pre-installed
  • FREYA™ Gen.2 - 16:1 Gearset, High torque motor


    If you're searching for a new M4/AR-15 platform for CQB, the Delta Armory R15 FREYA™ Gen.2 7" M-LOK M4/AR-15 AEG is one to watch. This uniquely styled AR is based on the real steel GrandPower Firearms R15 FREYA™, a modern M4/AR-15 with a skeletonised receiver design intended to improve handling and agility. This translates directly to the Delta Armory FREYA™ AEG which boasts a skeletonised receiver and M-LOK handguard, giving it an unnaturally low weight of only 2.1kg despite its realistic full metal build. This is the generation 2 FREYA™ and is kitted out with all the best bits from the ETU series paired with the EAGLE™ MOSFET. A match made in heaven if you ask us!

    Inside the version 2 gearbox, we are equipped with CNC steel 16:1 high-speed gears, a CNC steel cylinder and spring guide, a CNC aluminium piston head and cylinder head and a high torque motor to top it off. These parts join the usual Delta Armory SHS reinforced tappet plate, SHS piston and 6.03mm tightbore inner barrel, resulting in an impressive down-range effect and a significant improvement over the original but still respectable FREYA™ Gen.1.

    The EAGLE™ programmable MOSFET of the original FREYA™ remains, offering even more modes than the previous Delta Armory ETU. These include 3 or 5-round burst, binary trigger, sniper delay, semi-auto only, AUG mode, precocking and active braking. If you love an AR as advanced on the inside as it is externally, the Delta Armory R15 FREYA™ Gen.2 7" M-LOK M4/AR-15 AEG is what you need!

    From £359.99
    • Full metal construction
    • Gate ASTER II MOSFET preinstalled
    • 12.5" Daniel Defense® Quad railed CNC handguard
    Spenca Arms PRIME AEGs made for the UK market will pre-engage when used with 11.1V LiPo batteries. Regardless of what other sources may say, we recommend only using 7.4V LiPo batteries. Any faults arising from the use of 11.1V LiPo batteries are not covered by your 12-month warranty.

    Are you looking for an excellent out-of-the-box base rifle for your DMR build? The Specna Arms SA-P26 PRIME™ Daniel Defense® MK18 12.5" M4/AR-15 AEG is the AEG you need! This premium assault rifle has had its internals completely revamped to make it a force to be reckoned with. Some of these alterations include a powerful brushless motor, CNC 16:1 ratio steel gears running on 8mm J-CAGE bushings and a reinforced tappet plate for reliable feeding.

    The Prime™ is Specna's newest line of AEGs, they have taken their traditional AEG silhouettes and stripped away the internals to make room for a new set of improved parts to increase performance, consistency and rate of fire. The highlight of this AEG is its ASTER II MOSFET, it substantially improves trigger response and offers programmable firing modes. It also reduces the general wear on internal components and increases their reliability and performance during gameplay.

    If you want to make a DMR build but without needing the plethora of upgrades before it's skirmish-ready then the  Specna Arms SA-P26 PRIME™ should be the AEG on your wishlist!

    From £149.99
    • 6.03mm Tightbore inner barrel
    • High density polymer with aluminium handguard
    • Integrated suppressor - Stealthy styling!

    If you like to tiptoe around the skirmish site and catch the enemy off guard, Delta Armory has the perfect AEG for you! Introducing the DA-B04 Silent Ops 8, an M4/AR-15 AEG of the Delta Armory BRAVO™ series. BRAVO™ AEGs are constructed with strong high-density polymer receivers and aluminium handguards, making them perfect for those who want to step a bit closer to realism while maintaining maximum energy and agility in game. 

    Internally, the DA-B04 is very well equipped for the price, boasting a 6.03mm tightbore inner barrel, rotary HOP-up unit and a reinforced version 2 gearbox equipped with a quick change spring guide, 7mm ball bearing bushings and an SHS piston and tappet plate. Whether you run it as it is or plan on upgrading it top to bottom, the Silent Ops 8 from Delta Armory will serve you well!

    From £199.99
    • CNC Aluminium handguard
    • High-density polymer receiver
    • EAGLE™ programmable MOSFET

    If you're a CQB skirmisher and are looking for a new compact AR platform with a ton of nifty features all for a relatively low price, then the DA-B18-EGL BRAVO™ has you covered! This PDW-style AEG comes with a CNC aluminium handguard and a high-density polymer receiver. And of course, the star of the show, the EAGLE™ MOSFET! This ETU allows you to program your preferred firing such as burst modes, binary trigger and an AUG mode.

    This AR is equipped with an M-LOK handguard, sound-amplifying muzzle device and modernised receiver on the outside and kitted out on the inside with a rotary HOP-up unit and a reinforced version 2 gearbox equipped with a quick change spring guide, 7mm ball bearing bushings and an SHS piston and tappet plate, a 6.03mm tightbore inner barrel and the EAGLE™ programmable MOSFET.

    The compact nature of this AEG means that the PDW stock and buffer tube can only accommodate smaller batteries. We at Patrol Base recommend the Specna Arms 7.4V 600mAh 20/40C Battery for PDW as it is specifically designed for PDW-style assault rifles. If you want an advanced compact platform that is perfect for running around in a CQB skirmish, then the DA-B18-EGL BRAVO™ TALOS 3 PDW M4/AR-15 AEG is the one to choose!

    From £219.99
    • Full metal construction
    • 6.03mm Tightbore inner barrel
    • EAGLE™ Programmable MOSFET - Burst & binary ready!

    If you're in the market for a new CQB primary and need a full metal build with a fancy programmable MOSFET, your standards are certainly high! Lucky for you, Delta Armory has what you need with the DA-A18-EGL ALPHA™ TALOS 3 PDW M4/AR-15 AEG!

    This full metal M4/AR-15 AEG boasts full metal externals with the ultra-modern Delta Armory receiver design, a sleek and compact PDW stock and the Delta Armory EAGLE™ programmable MOSFET at the heart of the internals, offering the option of burst mode, binary trigger, semi-auto only, sniper delay, progressive trigger (AUG mode), precocking and trigger sensitivity adjustment. A seriously advanced bit of kit, the EAGLE allows you to program all of these modes using the trigger and fire selector only, with no need for apps, programming cards or other hidden costs!

    The EAGLE™ joins the reinforced version 2 gearbox equipped with a quick change spring guide, 7mm ball bearing bushings, SHS piston and tappet plate, and a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, resulting in a superb firing experience with far more pre-upgraded parts than a platform in this price range deserves! If you like to move fast in CQB with a full metal primary, the Delta Armory DA-A18-EGL ALPHA™ TALOS 3 PDW M4/AR-15 AEG is the ideal primary!

    From £209.99
    • Full metal construction
    • 6.03mm Tightbore inner barrel
    • EAGLE™ Programmable MOSFET 

    Whether you're new to the game and looking to start out with a full metal platform bristling with advanced features or a veteran skirmisher in search of an M4 AEG you can just pick up and go with, the Delta Armory DA-A06-EGL ALPHA™ KeyMod 10" M4/AR-15 AEG is a fine choice. A realistically hefty full metal build with a cutting-edge aesthetic at just the right length to do its dirty work both outdoors and in CQB, the DA-A06-EGL is ready for any challenge that faces it. 

    Equipped with a KeyMod handguard, sound-amplifying muzzle device and modernised receiver on the outside and kitted out with SHS reinforced parts, a 6.03mm tightbore inner barrel and the EAGLE™ programmable MOSFET on the inside, the DA-A06-EGL is an extremely competitive platform, both on price and in game! The EAGLE™ allows you to enhance trigger response with pre-cocking for CQB or select burst mode, binary trigger or AUG mode to improve hit probability outdoors, with the additional option of locking the gearbox to semi-auto only for DMR duty. 

    If you're after a new M4 AEG but don't like to commit to a particular build direction, the DA-A06-EGL won't make any decisions for you! Thanks to the "Barbie for men" modularity of the AR platform and the highly flexible EAGLE™ ETU, the DA-A06-EGL ALPHA™ KeyMod 10" M4/AR-15 AEG is ready to accept a full compliment of accessories, be kitted out just how you like it and give the enemy team what for when it comes to skirmish day!

    From £229.99
    • Full metal construction
    • 6.03mm Tightbore inner barrel
    • EAGLE™ Programmable MOSFET pre-installed

    MK18 fans, rejoice! The DA-A07-EGL ALPHA™ MK18 MOD.1 M4/AR-15 AEG is yet another fantastic full metal MK18 option, equipped with full metal ALPHA™ standard externals and Delta Armory's latest programmable MOSFET, known as the EAGLE™.

    The EAGLE™ programmable MOSFET offers more fire mode and customisation options than ever before. With sniper delay, AUG mode, semi-auto only, 3 or 5-round burst, binary trigger and selectable pre-cocking available, the DA-A07-EGL offers more options than any other MK18 in its price range. The EAGLE™ joins the usual Delta Armory 6.03mm tightbore inner barrel and rotary HOP-up unit, providing competitive performance straight out of the box. 

    If a full metal MK18 is on your shopping list and you have a thing for programmable controls, the DA-A07-EGL ALPHA™ MK18 MOD.1 M4/AR-15 AEG is the MK18 for you!

    From £239.99
    • Full metal construction
    • 6.03mm Tightbore inner barrel
    • MOSFET/ETU pre-installed - Burst/binary ready

    If you're looking for a modernised full metal M4A1, the DA-A02-ETU ALPHA™ M4A1 RAS AEG from Delta Armory is exactly that. This ALPHA™ line AEG boasts Delta Armory's best internals yet, featuring reinforced internal parts from SHS, CNC aluminium cylinder group parts, CNC machined 16:1 steel gears and a high torque motor, backed up by the Delta Armory programmable MOSFET/ETU system. The Delta ETU offers the option for burst mode, binary trigger and pre-cocking, all of which can be programmed in using the fire controls of the AEG itself. 

    On the outside Delta has added a gunfighter mod.3 style pistol grip, a slimline crane-style stock and an enhanced receiver, complete with gripping texture on the magazine well and a built-in enlarged trigger guard. This gives the now old-school M4A1 a bit of a refresh without ruining its iconic outline and maintaining suitability for both casual and Milsim skirmishes. If you love the M4A1 silhouette but want more modern ergonomics, the Delta Armory DA-A02-ETU ALPHA™ M4A1 RAS AEG is ideal!

    From £119.99
    • High-density polymer construction
    • M-LOK handguard
    • HAL¹ ETU/MOSFET - Programmable fire modes

    For those who want a lightweight and affordable platform, no matter your skirmishing experience, the Specna Arms SA-F05-RL FLEX™ HAL¹ ETU™ M4/AR-15 AEG is the perfect rifle for you! The SA-F05-RL follows Specna's FLEX™ build style, constructed predominantly from high-density polymer with an alloy outer barrel, resulting in a lightweight and agile build which won't have your arms burning after a gameday!

    Inside, we are treated to a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, offering superb accuracy potential and improved air efficiency, giving you a slight FPS boost with the same strength spring. Also inside is the HAL¹ MOSFET, offering a range of programmable fire modes usually only present in platforms twice this price!

    The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. That's one heck of a feature set for such a low-cost platform! If you're looking for a low-cost, lightweight primary but demand advanced internals, the Specna Arms SA-F05-RL FLEX™ HAL¹ ETU™ M4/AR-15 AEG is what you need!

    From £119.99
    • High-density polymer construction
    • M-LOK handguard
    • HAL¹ ETU/MOSFET - Programmable fire modes

    For those who want a lightweight and affordable platform, no matter your skirmishing experience, the Specna Arms SA-F05-RL FLEX™ HAL¹ ETU™ M4/AR-15 AEG is the perfect rifle for you! The SA-F05-RL follows Specna's FLEX™ build style, constructed predominantly from high-density polymer with an alloy outer barrel, resulting in a lightweight and agile build which won't have your arms burning after a gameday!

    Inside, we are treated to a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, offering superb accuracy potential and improved air efficiency, giving you a slight FPS boost with the same strength spring. Also inside is the HAL¹ MOSFET, offering a range of programmable fire modes usually only present in platforms twice this price!

    The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. That's one heck of a feature set for such a low-cost platform! If you're looking for a low-cost, lightweight primary but demand advanced internals, the Specna Arms SA-F05-RL FLEX™ HAL¹ ETU™ M4/AR-15 AEG is what you need!

    From £189.99
    • 6.03mm Tightbore inner barrel
    • ETU/MOSFET, High torque motor, 16:1 CNC gears
    • High density polymer construction

    If you don't like to waste energy lugging a full metal platform around but want high performance, pre-upgraded internals, the Delta Armory CHARLIE™ ETU range was conceived with you in mind. This is the DA-C04-ETU M4/AR-15 KeyMod AEG, based externally on the original DA-C04 but kitted out internally with Delta's APLHA™ ETU internals. 

    Inside, we are treated to 16:1 ratio CNC steel gears, CNC aluminium cylinder group parts, a 6.03mm tightbore inner barrel with a high torque Neodymium magnet motor to top it off. The Delta Armory programmable ETU/MOSFET system is also present, offering super snappy trigger response, improved rate of fire and the ability to program the fire controls for burst mode and binary trigger. Whether you're new to skirmishing and want a pre-upgraded platform that can tangle with the best, or you're a veteran who likes to fight easy, the DA-C04-ETU CHARLIE™ M4/AR-15 KeyMod AEG is the ideal addition to your Airsoft armoury!

    From £209.99
    • Full metal construction
    • 6.03mm Tightbore inner barrel
    • EAGLE™ Programmable MOSFET

    If you're looking for a highly flexible, full metal M4/AR-15 platform, the Delta Armory DA-A19-EGL ALPHA™ TEMPEST 1 M4/AR-15 AEG should suit you perfectly! Kitted out with Delta's ALPHA line externals with the unique billet-style receiver and an SMR-style handguard up front, this M4 doesn't look like anything else out there, and the perks don't end there!

    Inside, you'll find a 6.03mm tightbore measuring 380mm in length, a set of 18:1 ratio steel gears mounted on 8mm ball bearing bushings, an SHS piston with a full steel tooth rack and an SHS delayer chip and tappet plate to add reinforcement in the key places that need it.

    The pre-installed EAGLE™ MOSFET allows you to program the trigger for semi-automatic only, burst mode, binary trigger, AUG mode and sniper delay. Coupled with its quick-change spring system, the TEMPEST 1 makes for a great DMR base gun thanks to its relatible easy conversion process. Whether you're looking for an all-rounder for both indoor and outdoor environments or you want to quickly switch between a DMR setup and standard AEG, the Delta Armory DA-A19-EGL ALPHA™ TEMPEST 1 M4/AR-15 AEG will be an asset to you!

    From £109.99
    • High density polymer construction
    • 6.03mm Tightbore inner barrel
    • HAL¹ ETU/MOSFET - Programmable fire modes

    Whether you're a veteran skirmisher looking for a lightweight backup or a newcomer seeking superb bang for your buck, the Specna Arms SA-F04-RL FLEX™ HAL¹ ETU M4/AR-15 AEG should suit you perfectly! The SA-F04-RL follows Specna's FLEX™ build style, constructed predominantly from high-density polymer with an alloy outer barrel, resulting in a lightweight and agile build which won't have your arms burning after a gameday!

    Inside, we are treated to a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, offering superb accuracy potential and improved air efficiency, giving you a slight FPS boost with the same strength spring. Also inside is the HAL¹ MOSFET, offering a range of programmable fire modes usually only present in platforms twice this price!

    The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. That's one heck of a feature set for such a low-cost platform! If you're looking for a low-cost, lightweight primary but demand advanced internals, the Specna Arms SA-F04-RL FLEX™ HAL¹ ETU M4/AR-15 AEG is what you need!

    From £109.99
    • High density polymer construction
    • 6.03mm Tightbore inner barrel
    • HAL¹ ETU/MOSFET - Programmable fire modes

    Whether you're a veteran skirmisher looking for a lightweight backup or a newcomer seeking superb bang for your buck, the Specna Arms SA-F04-RL FLEX™ HAL¹ ETU M4/AR-15 AEG should suit you perfectly! The SA-F04-RL follows Specna's FLEX™ build style, constructed predominantly from high-density polymer with an alloy outer barrel, resulting in a lightweight and agile build which won't have your arms burning after a gameday!

    Inside, we are treated to a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, offering superb accuracy potential and improved air efficiency, giving you a slight FPS boost with the same strength spring. Also inside is the HAL¹ MOSFET, offering a range of programmable fire modes usually only present in platforms twice this price!

    The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. That's one heck of a feature set for such a low-cost platform! If you're looking for a low-cost, lightweight primary but demand advanced internals, the Specna Arms SA-F04-RL FLEX™ HAL¹ ETU M4/AR-15 AEG is what you need!

    From £239.99
    • 6.03mm Tightbore inner barrel 
    • Aluminium handguard, polymer receiver
    • ETU/MOSFET, High torque motor, 16:1 CNC gears

    If you're in search of an M-LOK-equipped AR AEG packed with pre-upgraded parts, the Delta Armory DA-B13-ETU BRAVO™ M4/AR-15 M-LOK AEG is one to watch. Like Delta's other BRAVO™ like offerings, the DA-B13-ETU boasts a CNC aluminium handguard and high density polymer receiver, giving you a great combination of realism and low weight. The handguard is rocking M-LOK slots at the 3, 6 & 9 o'clock positions and a 20mm Picatinny rail up top, ready for whatever accessories you need to complete your mission. 

    Delta's ETU AEGs are even more upgraded than the standard BRAVO™ line, boasting a pre-installed programmable ETU/MOSFET, a high torque motor, CNC steel 16:1 gears and CNC aluminium piston and cylinder heads. These pre-upgraded internals give the DA-B13-ETU a super snappy trigger response and raised rate of fire from the combination of improved efficiency via the ETU and faster mechanical cycling via the high-speed gearset. 

    If you need a handy platform with beastly internals at the perfect length for aggressive, fast-moving playstyles, the DA-B13-ETU from Delta Armory will be an asset to your game!

    From £149.99
    • 6.03mm Tightbore inner barrel
    • BRAVO™ AEG - CNC Alu handguard & polymer receiver
    • Reinforced internal parts from SHS

    If you like the iconic M4A1 shape but want more ergonomic furniture, the Delta Armory DA-B02 BRAVO™ RIS M4/AR-15 AEG should suit you perfectly! The DA-B02 is based on the real steel US Army-issued M4A1 rifle but is rocking the Delta Armory modernised receiver, Delta battery stock and "gunfighter mod.3" style ergonomic pistol grip, giving it a touch of modern comfort to go with its classic militant aesthetic. 

    Being an AEG of the Delta Armory BRAVO™ line, the DA-B02 combines the high-density polymer receiver and buffer tube of the CHARLIE™ line with a CNC aluminium handguard and alloy outer barrel. This gives the platform more realistic weight distribution and an extra hint of realism without compromising the platform's agility.

    Internally, the DA-B02 is well equipped with pre-upgraded internals focused on longevity and reliability straight out of the box. These include a reinforced gearbox shell, a piston with a full steel tooth rack and tappet plate from SHS and a quick change ball-bearing spring guide. A 6.03mm tightbore inner barrel paired with a rotary HOP-up unit is also present, intended to enhance long-range effectiveness and accuracy potential. Whether you're putting together a casual US Army-style loadout or need a lightweight platform to improve your in game agility, the DA-B02 BRAVO™ RIS M4/AR-15 AEG makes a fine primary!

    From £159.99
    • 6.03mm Tightbore inner barrel
    • Pre-upgraded with SHS parts
    • CNC Aluminium quad rail handguard

    If you like the deadly, snub-nosed look of an integrally suppressed AR platform but want a shape less seen, the Delta Armory DA-B09 BRAVO™ Silent Ops Classic M4/AR-15 AEG should be right up your street. This is Delta's "Classic" version of the Silent Ops 7, boasting a CNC machined aluminium handguard with a wider-than-usual design to bring more realism to the sneaky beaky AR. 

    The handguard is free-floated and includes a 20mm Picatinny rail extension at the top, designed to bridge the gap between the receiver and handguard rails for a more integral look and to allow for larger optical sights. If you ask us, this is how the original should have been, setting the Silent Ops apart from other similar integrally suppressed M4 AEGs. Inside the DA-B09, we are treated to the same pre-upgraded internal parts as the other offerings in Delta's BRAVO™ line, including a rotary HOP-up unit, 6.03mm tightbore inner barrel, SHS tappet plate and piston, 7mm ball bearing bushings, a CNC Type A flat trigger and a reinforced V2 gearbox shell. 

    For stealthy skirmishers who want a more unique look, the Delta Armory DA-B09 BRAVO™ Silent Ops Classic M4/AR-15 AEG will give you exactly that. With pre-upgraded internals focussed on reliability and a unique front-end style to separate it from the masses, the Silent Ops Classic is a mean machine ready for any skirmish scenario you put it in!

    From £119.99
    • High density polymer build
    • 6.03mm Tightbore inner barrel
    • HAL¹ Programmable ETU/MOSFET

    If you're a practical skirmisher seeking a lightweight and cost-effective primary ready to host the most modern accessories, the Specna Arms SA-F08 FLEX™ HAL¹ ETU M4/AR-15 AEG is one to watch. Being part of Specna's FLEX™ line, this AEG is constructed almost entirely from high density polymer with a solid alloy outer barrel, ideal for mobile, agile and hostile playstles!

    Inside, we are treated to Specna's latest programmable MOSFET, known as the HAL¹. The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. Like the original SA-F08, the HAL¹ equipped version also has a 6.03mm tightbore inner barrel, giving it above-average accuracy potential and a slight increase in FPS from the same strength spring.

    On the outside, the SA-F08 is equipped with a 14mm CCW male threaded barrel, ready for a tracer unit or suppressor, an M-LOK handguard for your mission essential doo-dads, grips and other handling enhancements and a 20mm Picatinny railed receiver, ready for your choice of optical sight. If you're looking for an affordable entry point to Airsoft which will keep you competitive, the Specna Arms SA-F08 FLEX™ HAL¹ ETU M4/AR-15 AEG is a fantastic choice!

    From £119.99
    • High density polymer build
    • 6.03mm Tightbore inner barrel
    • HAL¹ Programmable ETU/MOSFET

    If you're a practical skirmisher seeking a lightweight and cost-effective primary ready to host the most modern accessories, the Specna Arms SA-F08 FLEX™ HAL¹ ETU M4/AR-15 AEG is one to watch. Being part of Specna's FLEX™ line, this AEG is constructed almost entirely from high density polymer with a solid alloy outer barrel, ideal for mobile, agile and hostile playstles!

    Inside, we are treated to Specna's latest programmable MOSFET, known as the HAL¹. The HAL¹ is ready to go toe to toe with other modern MOSFETs, allowing you to select binary trigger, AUG mode and sniper delay instead of semi-auto and semi-auto lock, 3-round burst or 5-round burst instead of full auto. Also available are 5 levels of trigger sensitivity adjustment, 6 levels of adjustable pre-cocking, active braking and a low battery voltage alarm. Like the original SA-F08, the HAL¹ equipped version also has a 6.03mm tightbore inner barrel, giving it above-average accuracy potential and a slight increase in FPS from the same strength spring.

    On the outside, the SA-F08 is equipped with a 14mm CCW male threaded barrel, ready for a tracer unit or suppressor, an M-LOK handguard for your mission essential doo-dads, grips and other handling enhancements and a 20mm Picatinny railed receiver, ready for your choice of optical sight. If you're looking for an affordable entry point to Airsoft which will keep you competitive, the Specna Arms SA-F08 FLEX™ HAL¹ ETU M4/AR-15 AEG is a fantastic choice!

    From £169.99
    • 6.03mm Tightbore inner barrel
    • CNC Aluminium URX 3 style handguard
    • Reinforced internal parts from SHS

    If you're in search of a lightweight AR platform for outdoor skirmishes, the Delta Armory DA-B14 BRAVO™ URX 3 12" M4/AR-15 AEG is one to watch. BRAVO™ AEGs are constructed with strong high-density polymer receivers and aluminium handguards, making them perfect for those who want to step a bit closer to realism while maintaining maximum energy and agility in game. 

    The DA-B14 is rocking a URX 3 style handguard, a super slim handguard designed for modern shooting stances with a full-length 20mm Picatinny rail up top and short lengths on the sides and bottom, giving you enough space for your mission essentials without making the front end too heavy and difficult to point. 

    Inside, we are treated to the usual Delta Armory complement of pre-upgraded internals, including an SHS tappet plate, SHS piston with a full steel tooth rack, 7mm ball bearing bushings and a reinforced gearbox shell, complete with quick change spring system. All internal parts are Tokyo Marui AEG spec, meaning you have access to an unrivalled aftermarket if you ever want to upgrade. If you like to move fast skirmishing in the great outdoors, the Delta Armory DA-B14 BRAVO™ URX 3 12" M4/AR-15 AEG will be an asset!

    From £169.99
    • 6.03mm Tightbore inner barrel
    • CNC Aluminium URX 3 style handguard
    • Reinforced internal parts from SHS

    If you're in search of a lightweight AR platform for outdoor skirmishes, the Delta Armory DA-B14 BRAVO™ URX 3 12" M4/AR-15 AEG is one to watch. BRAVO™ AEGs are constructed with strong high-density polymer receivers and aluminium handguards, making them perfect for those who want to step a bit closer to realism while maintaining maximum energy and agility in game. 

    The DA-B14 is rocking a URX 3 style handguard, a super slim handguard designed for modern shooting stances with a full-length 20mm Picatinny rail up top and short lengths on the sides and bottom, giving you enough space for your mission essentials without making the front end too heavy and difficult to point. 

    Inside, we are treated to the usual Delta Armory complement of pre-upgraded internals, including an SHS tappet plate, SHS piston with a full steel tooth rack, 7mm ball bearing bushings and a reinforced gearbox shell, complete with quick change spring system. All internal parts are Tokyo Marui AEG spec, meaning you have access to an unrivalled aftermarket if you ever want to upgrade. If you like to move fast skirmishing in the great outdoors, the Delta Armory DA-B14 BRAVO™ URX 3 12" M4/AR-15 AEG will be an asset!

    From £169.99
    • 6.03mm Tightbore inner barrel
    • CNC Aluminium handguard
    • Pre-upgraded version 2 gearbox 

    If you love the looks of the DA-C05 Silent Ops but wish it was longer with more metal parts, the Delta Armory DA-B08 BRAVO™ 9" SilentOps M4/AR-15 AEG is just what you need! BRAVO™ AEGs are constructed with strong high-density polymer receivers and aluminium handguards, making them perfect for those who want to step a bit closer to realism while maintaining maximum energy and agility in game. 

    The Silent Ops 9" is rocking a quad rail handguard styled after the KAC Freefloat RIS paired with a suppressor hidden beneath, giving it the stealthy styling of shorter suppressed ARs with enough length to hide a 400mm 6.03mm tightbore inner barrel inside for maximum long range effect. The tightbore is paired with a rotary HOP-up unit and a reinforced version 2 gearbox equipped with a quick change spring guide, 7mm ball bearing bushings and an SHS piston and tappet plate, resulting in a build focussed on reliability and strength with a slight accuracy advantage for good measure!

    Whether you're looking for a DMR base gun or a long-barreled AR platform which won't weigh you down, the Delta Armory DA-B08 BRAVO™ 9" SilentOps M4/AR-15 AEG will suit your needs perfectly!

    From £159.99
    • 6.03mm Tightbore inner barrel
    • Aluminium micro suppressor & handguard
    • Preinstalled EAGLE™ programmable MOSFET

    Suppose you're looking for an advanced, compact AEG with plenty of features for its relatively low price. In that case, the Delta Armory DA-B03-EGL BRAVO™ SilentOps CQB M4/AR-15 AEG is probably the finest option out there currently! This Delta Armory rifle boasts an aluminium micro suppressor, CNC aluminium quad-railed handguard, and Delta's unique receiver constructed from high-density polymer and the superb Delta Armory EAGLE™ battery stock.

    Inside, the DA-B03 is very well equipped for the price, boasting a 6.03mm tightbore inner barrel, rotary HOP-up unit and a reinforced version 2 gearbox equipped with a quick change spring guide, 7mm ball bearing bushings and an SHS piston and tappet plate. All of the internals are Tokyo Marui version 2 gearbox spec and compatible with aftermarket upgrades, meaning you can push the performance up even further down the line if you feel the need.

    The EAGLE™ MOSFET is the star of the show, offering a range of programmable firing modes such as 3 or 5-round burst mode, binary trigger, sniper delay, AUG mode, semi-auto only and precocking. The ability to program this wide variety of modes using the trigger and selector of the gun itself gives the DA-B03-EGL the edge over practically any other platform in this price range.

    M4, AR-15 and M16 platforms are some of the most popular in the Airsoft community. At Patrol Base, we have a great selection of these rifles and their variants, including US Army M4A1 and M16 replicas. Not to forget the highly popular MK.18 MOD.1 rifle, an iconic AR-15 design used by Delta Force and the US Navy SEALs!

    From gas-powered GBBR M4s with exciting recoil to high-performance AEG M4s which shoot perfectly in any weather conditions, we have an M4/AR-15 platform to suit all skill levels and playstyles, from CQB specialists to long-range Designated Marksmen. 

    If you’re looking for an Airsoft platform to upgrade, an M4/AR-15 AEG is ideal thanks to its wide aftermarket support, customisation options and accessory attachment interfaces. Parts are easy to replace and accessories can be mounted straight away in most cases; perfect for those who dream of their own custom Airsoft gun!

    If you're struggling to choose which M4 is right for you, read our blog post and watch our video about M4 Assault Rifles

    Shop our huge selection of AR-15, M16 and M4 Airsoft AEGs and GBBRs online or visit us at our store in Huddersfield to see the range in person!