Delta Armory DA-GP-A10 ALPHA™ Silent Ops DMR M4/AR-15 AEG

If you prioritise stealth and need a platform to match, the Delta Armory Silent Ops series should suit you well. This is the DA-GP-A10 ALPHA™ Silent Ops DMR, a full-length integrally suppressed M4/AR-15 platform ideally suited to long-range but short enough to handle a mixed environment. The combination of a 10-inch outer barrel with a 5-inch suppressor makes this beast the same length as the standard M4A1 carbine, meaning it can go anywhere and do anything, though we think it would make a fantastic DMR base gun. 

The latest generation M4/AR-15 platform from Delta Armory, this DA-GP-A10 is licensed by the Slovakian firearm manufacturer Grandpower, which launched the production of sharp M4/AR-15 rifles in 2022. Thanks to this licensing, you will find the Grandpower logo and trademarks on the externals of this platform. This rifle also features a unique serial number on it for added realism.

Being an AEG of the Delta Armory ALPHA™ line, the DA-GP-A10 Silent Ops DMR is considerably pre-upgraded straight out of the box, boasting a reinforced gearbox shell, SHS piston with a full steel tooth rack, a quick change ball bearing spring guide and a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit for impressive long-range effectiveness. ALPHA™ line AEGs also boast full metal construction and the unique Delta Armory battery stock, making the DA-GP-A10 perfect for those who want an elite look and realistic heft. 

Equipped with a unique KeyMod handguard and modernised receiver, the Silent Ops DMR hones the M4/AR-15 platform with ultra-modern externals inspired by high-end real steel ARs. Whether you are going all the way and building a semi-locked DMR or simply adding an optic and getting to work on the battlefield, the DA-GP-A10 Silent Ops DMR will be an asset to your game. 

Starting at the front end we can find a pre-installed aluminium suppressor which covers the 360mm 6.03mm tightbore inner barrel and mounts to the 10-inch alloy outer barrel. This gives the Silent Ops DMR a stealthy aesthetic, similar to the much-lauded "Honey Badger" configuration but with the extra length to handle long-range encounters. The suppressor mounts to 14mm CCW male threading but due to the inner barrel length, a barrel extension will be required to mount an aftermarket tracer unit.

Moving rearwards, we come to the handguard of the Grand Power Silent Ops DMR which is constructed from aluminium using CNC machining, guaranteeing the KeyMod attachment slots and rails have a flawless form. The handguard is equipped with a 20mm Picatinny rail along its entire upper surface, allowing for a wide range of 20mm Picatinny accessories to be added without hindering your ability to mount a giant scope. 

At the 3, 6, and 9 o'clock positions, we are treated to KeyMod negative space attachment slots, allowing you to mount the latest real steel vertical and angled foregrips directly or make use of 20mm Picatinny rail adapters for KeyMod if you prefer 20mm Picatinny accessories. The front end of the handguard is also swept back, adding to the dynamic, modern styling of the Silent Ops DMR. 

The benefit of KeyMod is that in its slick configuration, the handguard is incredibly light and surprisingly ergonomic, meaning you don't need to add rail covers to avoid the cheese grater effect as you might with a 20mm quad rail. In this integrally suppressed configuration, the front 3 KeyMod slots are non-functional due to the lack of space between the inner handguard wall and the suppressor, the other KeyMod slots can all be used with the suppressor in place.

The receiver of Delta Armory's DA-GP-A10 ALPHA™ Silent Ops DMR M4/AR-15 AEG is a modernised design, complete with Grand Power laser engraved branding on either side of the mag well and the Delta Armory logo just behind the magazine release. The fire selector is positioned just above the pistol grip on the left side of the receiver and offers 3 modes of fire; SAFE, SEMI and AUTO, with a 90-degree throw between each mode. This makes the selector easy to switch, but not so easy that it can be accidentally knocked out of position. The magazine release is on the right side of the magazine well and is accessible for a right-handed user with the tip of the trigger finger. It features a raised design around it to prevent it from snagging on any clothing or the environment.

Pulling back the charging handle, located at the top rear of the receiver will open the dust cover and retract the mock bolt carrier to allow access to the rotary HOP-up adjuster. This is the latest HOP-up unit design for the M4/AR-15 and provides finer increments of adjustment and holds its setting more effectively when compared to the older gear style HOP-up unit. The charging handle has an extended latch for easier access, allowing even those with thick gloves to access the HOP-up unit, though you may need to take off a glove to turn the adjuster!

The mock bolt catch is located in the centre of the left side of the receiver, and while this is a dummy control which doesn't provide a function it is nonetheless a separate part to maintain the realistic appearance and avoid the tell-tale signs of being a replica. The dummy forward assist is found on the right side of the upper receiver. This control does nothing on an AEG but it is included on the Silent Ops DMR to keep the rifle faithful to real M4/AR-15 rifles.

The pistol grip of the Grand Power Silent Ops DMR boasts a refined grip angle for greater comfort when shooting with the stock fully collapsed and in more modern shooting stances. Based on the real steel "Gunfighter mod.3" grip, a modern ergonomic design, each flank of the pistol grip includes fine texturing for perfect wet weather handling. The trigger is known by Delta Armory as the CNC Type A Flat trigger, offering a flat serrated front surface with a short finger ledge, ideal for rapid double taps.

At the rear of the receiver, we come to the steel CQD style sling plate, which offers ambidextrous functionality with single-point slings; perfect for left or right-handed shooters. The steel construction of the sling plate practically guarantees even if you mount a massive rifle scope, PEQ box and RunCam on the Silent Ops DMR, the sling plate will be strong enough to support the weight.

To the rear of the sling plate, we come to the M4/AR-15 buffer tube, which is constructed from alloy. The buffer tube offers 6 positions of stock adjustment for the pre-installed Delta Armory battery stock. To access the battery compartment, pull down on the cylinder that sticks out of the bottom of the stock adjustment paddle. Once it is pulled out as far as it can go, the stock can be slid off to reveal the battery compartment which will house a nunchuck/crane-style battery. For the DA-GP-A10 ALPHA™ Silent Ops DMR, we recommend a 7.4V 1200mAh Battery nunchuck battery but you can also make use of a 9.6V 1600mAh NiMH for extra capacity.

As it comes, the Grand Power Silent Ops DMR is fitted with plenty of pre-upgraded internal parts focusing on longevity and user-friendly maintenance. The version 2 gearbox shell is reinforced, allowing it to be upgraded for higher power springs to achieve the ultimate DMR build. The spring guide is a quick-change design, allowing for quick and easy power tuning without opening the gearbox shell. It has ball bearings in its base to reduce the rotational force applied to the gearbox shell for a longer lifespan. 

Inside the gearbox, we have 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 ball-bearing bushings allow the gears to spin more freely with a reduced gearbox report and a much smoother sound. To provide the accuracy needed to get the job done at long range, the DA-GP-A10 ALPHA™ is rocking a 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, offering higher FPS with the same spring and finer HOP-up adjustment increments. 

Either indoors or outdoors, the DA-GP-A10 Silent Ops DMR is the perfect companion for a stealthy skirmisher. Equipped with plenty of accessory options, a cutting-edge receiver design and a unique, ergonomic stock with loads of battery space, the DA0-GP-A10 makes a great all-rounder for those who like the integrally suppressed look but also has great potential as a DMR for those with a long-range leaning. Not to forget the real steel Grand Power licensing and trademarks on the rifle, completing its realistic and authentic look.

Features

• Full metal construction - Realistically hefty
• Licensing from Real Steel Slovakian firearm manufacturer Grandpower
• Unique serial number
• 6.03mm Tightbore inner barrel - Great accuracy potential, 360mm length
• 14mm CCW Male threaded outer barrel - Tracer/suppressor ready, barrel extension may be required
• Flip-up iron sights pre-installed - Mounted to the top rail, press textured buttons to flip up
• KeyMod handguard - Compatible with KeyMod accessories at 3, 6, & 9 o'clock, 20mm rail up top
• Integral suppressor - Sneaky looks, the 360mm tightbore inner barrel runs through it
• 20mm Picatinny railed receiver - Ready for a red dot sight or rifle scope
• Unique receiver design - Angular surfaces, gripping texture on the front of the magazine well
• Enlarged trigger guard - Easy access for gloved or ungloved shooters
• Ergonomic pistol grip with reduced grip angle - Great for modern shooting stances, very comfy
• Ambidextrous sling plate - Mount a single-point sling on the left or right side
• Extended charging handle latch - Easy access to the HOP-up unit for adjustment
• Rotary adjustable HOP-up unit - Easy to adjust in fine increments, holds its setting well long-term 
• 6-Position M4/AR-15 buffer tube - Adjust the stock to suit your body type perfectly
• Delta Armory sliding battery stock - Plenty of battery space, low-profile adjustment lever & QD sling socket 
• Rear wired - Mini-Tamiya connector - Recommended battery: 7.4V 1300mAh LiPo in Crane/Nunchuck config.
• Reinforced version 2 gearbox - 
  • SHS Piston with steel full tooth rack
  • SHS Delayer chip
  • SHS Tappet plate
  • Quick change ball bearing spring guide
  • Steel 18:1 gearset
  • 8mm Ball bearing bushings
• Compatible with M4/AR-15 AEG magazines - Plenty of spares available

Package Includes

• Delta Armory DA-GP-A10 ALPHA™ Silent Ops DMR M4/AR-15 AEG
• 120rnd Mid-cap magazine