G&G BEU for G&G ARP/R2.0 Series (Battery Extension Unit) Pistons & Piston Heads This stock adaptor allows the

This stock adaptor allows the mounting of an M4 push-on tube and will accommodate most M4/M16 stocks currently produced

Metal Barrel & Flash Hider

It is perfect for shooters who love the ergonomics and aesthetics of the longer EPF2 but do not require the additional grip length or LiPo battery storage

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The design has two nubs with a channel in between

G&G BEU for G&G ARP/R2.0 Series (Battery Extension Unit) Pistons & Piston Heads This stock adaptor allows theThe BEU, or battery extension unit is a must for players who wish to add extra battery space to existing ARP series or Raider 2. 0 series AEGs. The unit provides an additional 50mm of battery space, developed by Airtech Studios.