Mach Sakai shows this mean looking KSC STI Strike Gas Blowback Pistol. Based on the STI Edge 5.1 it is designed for extreme close combat. It has a spiked muzzle to protect the slide, a hmammer guard to ensure that it will fire, and a hook located at the grip area for breaking glass. It uses the System 7 gas tech, a precision type hop-up, and a 20mm under rail for attaching weapons accessories.