Airsoft Stock Tubes & Battery Extensions

An Aluminium constructed Buffer Tube for Airsoft Electric M4/M15/M16 replicas, which allows you to install a telescopic stock to have greater control over the length of the rifle.

If you, like many others run the coveted PDW style stocks but find yourself needing more battery space, CYMA have got something that fits the bill. Designed for rifles such at the CM.097E and CM.041G, this stock extension unit attaches to the base of the stock and gives you roughly 3cm of additional space to house larger batteries, which allows you stay in the field longer and keep picking off those all important targets.

Constructed from tough and sleek aluminium, this extension will blend right in with your loadout and no more will you fear running low in the heat of battle.

If you're putting together an M4/AR-15 AEG from scratch or you want to add a sliding stock to your fixed stock rifle, this buffer tube should help! The Buffer Tube for M4/AR-15 AEG from Delta Armory is constructed from alloy and compatible with most M4/AR-15 AEGs on the market. The tube provides 6 positions of adjustment for whichever M4/AR-15 AEG sliding stock you choose to mount, allowing you to collapse the stock for storage or close-range engagements. 

The set includes the buffer tube itself, the castle nut (non-functional) and the bolt required to mount the buffer tube. This is a standard TM clone buffer tube design and should fit most M4/AR-15 AEGs without issue, though as with any external mod, there may be slight fitting which needs to be carried out. 

If you want to run your Specna Arms PDW stock-equipped rifle all day, this is what you will need. With a considerable amount more room than the original battery tube, this tube can take up to a 7.4v 1450mAh LiPo battery.

If you're finding your current battery running out too quickly and have nowhere to store a larger battery this battery extension from Hades Airsoft has got you covered!

A PDW stock extension built from high density polymer, design specifically for the Double Eagle replica. Models include the M904G, M904C, M904L and M904R.

Keep yourself in the fight and shoot for longer durations with battery storage up to 16 cm within the stock.

If you have a Double Eagle M90x with the Honey Badger PDW stock and you fancy a change, until now you have been SOL! Introducing the Buffer Tube for Double Eagle M4/AR-15, a replacement original part from the M904 AEG. This set includes an alloy buffer tube and castle nut, a steel bolt and spacer and a polymer receiver stock adapter which can be used to convert an M90x series with the Honey Badger stock to a standard AR buffer tube.

Whether you have damaged the stock mounting apparatus on your Double Eagle M90x polymer receiver or you are bored of the Honey Badger look and you want to change things up, this set is the perfect thing!

A Polymer constructed Buffer Tube for Fixed Stock AK models, allowing you to install an M4 Stock on the back of your AK. This also offers you Six Positions to set the Stock to, so that you can rapidly change the overall length of the Gun. This is great for storage and transport, but also for when you want to transition to tighter, indoor areas.

If you want to give your LCT AK a modern touch, the M4/AR-15 Buffer tube for LCT Side-Folder AK AEGs will do exactly that! Constructed with a steel folding mechanism and alloy buffer tube, this stock adapter is every bit as well made as LCT AKs and compatible with any LCT AK which uses a side folding AKS-74 style receiver. A detailed compatibility list can be found in the "Full Description" below.

The buffer tube allows practically any M4/AR-15 sliding stock to be installed and provides 5 positions of adjustment, perfect for any body type. If you're working on your PMC primary or want to give your LCT Side-folder AK a taste of modern ergonomics, this is what you need!

A 3D printed Battery Extension Unit from the talented people at Airtech Studios. It is designed for the G&G PDW15 & PDW CQB so that you can install larger batteries than before and still retain sliding stock functionality.

If you're working on a featherweight M4 build, Delta Armory has the buffer tube for you! The Polymer Buffer Tube for M4/AR-15 AEG is compatible with most Airsoft M4/AR-15 platform AEGs and should also fit AR-9 AEGs which use the same stock mounting lug as standard Marui-spec M4 AEGs.

Providing 6 positions of stock adjustment for whatever M4/AR-15 sliding stock you mount, the tube is constructed from high density polymer with a textured matt finish and is solid as a rock, despite its ultra-low weight. The set also includes the correct length mounting bolt and spacer so you won't have to work too hard to fit it!

If your primary is a SigAir MPX, MCX or has a 1913 Picatinny stock adapter you now have one more stock option thanks to Laylax! The Lightweight M4/AR-15 Stock Tube Adapter is designed to mount to a 1913/20mm Picatinny stock adapter or the built-in 1913 stock mount on the MPX and MCX platforms and provides a 6-position M4/AR-15 buffer tube constructed from aluminium, ready for any M4/AR-15 sliding stock you fancy. 

The buffer tube is machined to allow for wire routing in rear-wired setups and has a threaded rear cap to keep your battery well clear of dirt and debris. The main perk of this stock adapter is its remarkably low weight, tipping the scales at a mere 140g thanks to its aluminium construction. If you want a more conventional stock option for your 1913/20mm Picatinny stock equipped AEG or GBBR this is perfect for the job!