From Airtech Studios we have a Battery Extention Unit for the G&G ARP9 and ARP556 Rifles.
By offering additional spacing inside the battery compartment, the Battery Extension Unit (BEU™) is designed specifically to relieve all stresses on the ARP9/ 556's components such as the MOSFET and bending of electrical cables to protect it throughout, increasing its durability.
The BEU™ is designed to fit beautifully with the ARP9's original design by sitting seamlessly inside the stock compartment offering two points of shoulder adjustments to ensure compactness and maneuverability.
The BEU™ is highly versatile and can be used across the G&G ARP9, ARP556 and CM16 Raider L.2.0E stocks. Once installed the BEU™ eliminates the rattling butt-stock by locking-down the two metal rails!
