JK Army does a test of the SP SYSTEM MWS Complete Gas Blowback Rifle at Pozi Shop. This incorporates all the upgrade parts from SP System for the Tokyo Marui MWS Gas Blowback System that includes Hop-Up, Bolt Carier Forward Assist, Magazine Spring, Mag Gas Gasket, Hop-Up Bucking, Nozzel Spring, and more. Check the video out of the upgrades are worth purchasing for your M4 MWS.
Airsix TV shows the SP System T8 Option Parts made for the Tokyo Marui MWS Gas Blowback series... "This video is M4 CQBR BLOCK1 GBBR released by MARUI and T8 option parts of SP SYSTEM, an option for MWS sold by TMC. The MWS used in this video is a product that was purchased directly. Airsoft's all-in-one AIRSIX TV that spends your time and money instead."
