|  King Arms Hard Piston for Tokyo Marui EBB M4 & AK Series Airsoft AEG
This piston is made from Nylon Fiber with full metal teeth on it to provide additional durability and reinforcements. Suitable for Marui Electric Blowback M4A1; M4 CQB-R; SOPMOD M4; AKS74N; AKS74U; AK74MN & AK102. Material: Nylon Fiber, Steel Weight: 15g Manufacture: King Arms |