SRU SARB15 MWS Short Cycling Bolt System For Tokyo Marui MWS M4 GBB

SRU S.C.S. (Short Cycling System) bolt kit for MWS (Marui GBB ARs) The S.C.S. BOLT KIT is designed to interface with the SARB-15 kit. The SHORT BUFFER TUBE is already included in the SARB-15 kit and does not need to be purchased separately. FOR ARSOFT GBB only!!!! Bolt Kit content: Bolt Carrier X1 (not including nozzle) - 8620 alloy steel + surface hardening treatment Spring Plunger X 1 Spring Rod X 1 (The SPRING ROD is used to secure the SHORT BUFFER TUBE END CAP included in the SARB-15 kit.) Recoil Springs X 4 PCS (Includes summer spring, winter spring, and CO2 system spring set.)