Airtech Stock-Butt Extension G&G ARP-9 / ARP-556
Airtech Stock-Butt Extension G&G ARP-9 / ARP-556
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Tracked delivery. Free on UK orders over £150.
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Collect in store. Free click & collect from our shop at Skirmish Wycombe.
DETAILS
DETAILS

- description
The ARP-9 and ARP-556 are built short, and the GOS-V5 stock reflects that — the butt is a narrow pad with very little surface against your shoulder. On a compact gun that is where the instability comes from.
This extension bolts plates to each side of the stock to give a much larger shoulder surface. The gun then sits firmly rather than rocking, which steadies the aim on a platform that has very little length to work with.
The expanded surface is textured to resist slipping, so it holds position through movement rather than creeping off the shoulder when you are running.
It is injection-moulded ultra-tough polycarbonate, made in collaboration with Burst-head Japan. Installation is simple: insert the plates each side and tighten the screws. A useful side effect is that it lets the gun stand vertically without tipping, which helps when transporting kit.
Specifications
| Specification | Detail |
|---|---|
| Fits | G&G ARP-9 and ARP-556, GOS-V5 stock |
| Material | Injection-moulded ultra-tough polycarbonate |
| Design | Side plates giving an expanded, textured shoulder surface |
| Installation | Insert plates each side of the stock and tighten the screws |
| Developed with | Burst-head Japan |
| Side benefit | Allows the gun to stand vertically without tipping |
Good to know before you buy
A bigger shoulder surface is what stabilises a short gun. There is nothing else to gain from on an ARP-length stock.
It also lets the gun stand upright on its stock, which is handy in a car or a case.
Frequently asked questions
What does it actually improve?
Shoulder contact area. The GOS-V5 butt is narrow, and a wider surface stops the gun rocking against your shoulder.
Which guns does it fit?
The G&G ARP-9 and ARP-556, on the GOS-V5 stock.
Is it hard to fit?
No. The plates insert either side of the stock and the screws tighten down.
Will it slip?
The expanded surface is designed to resist slipping so it holds position while you move.