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With its unmatched features
Compatible with most M4 and M16 airsoft rifles
3 / LUCY-4 Mid-Cap Magazine
With prominent markings such as 'SER
36g BBs are a must-have
Airtech Battery Extension Unit (BEU) - ARP9/556 Deadly Customs With its unmatched featuresAirtech Studios BEU Battery Extension Unit (G&G ARP9 ARP556 Black) The Airtech Studios BEU (Battery Extension Unit) for G&G ARP9 ARP556 is the perfect solution to relieve a cramped battery compartment, providing extra room for your MOSFET, fuse, and cables. This extension unit is designed to allow a larger battery capacity, ensuring your airsoft gun has the power needed for all day skirmishes without the risk of overbending and damaging cables.
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