Mach Sakai checks out a customised KSC MAGPUL M4 gas blowback rifle for this episode if it performs to his standards. The KSC Magpul M4 GBB Carbine, licensed through PTS Syndicate and built on the KWA/KSC LM4 platform with Magpul MOE externals, delivers exceptional recoil and a satisfying semi-automatic shooting experience, as demonstrated by consistent target hits at the range.