5KU Hammer and Sear Parity Version for WA M4 GBB Airsoft CNC Aluminum ConstructionCompatible with Marui / WE and Similar GBB Airsoft5KU : GB-1345KU Hammer and Sear Parity Version for WA M4 GBB AirsoftSKU: 5KU-GB-134$8.66PriceQuantity*Add to CartBuy Now