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:
1) Bolt Carrier X1 (not including nozzle) - 8620 alloy steel + surface hardening treatment
2) Spring Plunger X 1
3) Spring Rod X 1 (The SPRING ROD is used to secure the SHORT BUFFER TUBE END CAP included in the SARB-15 kit.)
4) Recoil Springs X 4 PCS (Includes summer spring, winter spring, and CO2 system spring set.)