Airtech Studios G&G ARP9 / ARP556 BEU Battery Extension Unit Sights High capacity (Hicap) magazines usually

High capacity (Hicap) magazines usually hold 150 rounds or more

The mesh allows for less muffled sounds and better headset compatibility

and the G&G Firehawk AEG

The NcSTAR Keymod QR (quick release) Sling Attachment Mount - VMKMQSM

Airtech Studios G&G ARP9 / ARP556 BEU Battery Extension Unit Sights High capacity (Hicap) magazines usuallyThe Airtech Studios G&G ARP9 ARP556 BEU Battery Extension Unit is designed to fit on G&G ARP series of AEG guns: fits on the ARP9 and ARP556. Very easy to install so you can add longer and bigger batteries in your rear stock buffer area. With it installed, you can use 9. 6v 1600mah nun chuck, and any longer 11. 1v batteries in it, with extra room to spare. This is a must have for those that want flexibility with battery space. For the ARP9 and ARP556,