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."