Description GameFace ACG357 CO2-Powered GF600 Semi-Auto 8-Shot 357 Airsoft Revolver, Grey/Brown Stop zombies in their tracks with the GF600 357 Revolver. Firing.12gr BBs up to a screaming 400 FPS, the undead are no match for this CO2 powered, semi-auto, 8-shot sidearm. â A fixed blade front sight and notch rear sight are complemented by a detachable grip panel for easy CO2 replacement. This is a heavyweight pistol for serious zombie eradication.Ergonomic, finger molded, textured grip,Realistic swing out cylinder and 8 round clip,Fixed blade front sight,6mm Airsoft/upto 420 FPS,CO2 Powered Semi-Automatic Revolver,Heavy-weight, metal and polymer pistol with ergonomic finger-molded textured grip,