Done in Cantonese, PTS Syndicate explain what the MEC Stock Buffer made for the Tokyo Marui MWS GBB is all about... "The MEC Stock Buffer for Tokyo Marui MWS is precision machined from lightweight 6000 series aluminum alloy.  It is designed to reduce felt recoil and help stabilize the bolt travel in the Tokyo Marui MWS GBB M4. Reduced recoil will allow for faster and more accurate follow-up shots and reduced split times in situations where multiple shots are required on a target or if multiple targets need to be engaged such as in competition shooting or high tempo close quarter combat. Stabilized bolt travel decreases bolt bounce and improves gas use consistency and efficiency."