Stainless steel 8-round KimPro® Tac-Mag® for 1911 .45 ACP pistols with full-length grip. A KimPro® Tac-Mag® maximizes the performance of any 1911 pistol. Premium features include Teflon-coated stainless steel follower Rocket wire spring and large round-count recognition holes . An exclusive quick-change floorplate permits the immediate attachment of one of three included bases – a conventional stainless steel plate slim bumper pad for carry or a thick bumper pad for competition or use with extended magazine wells. Compatability: Kimber Custom Pro Ultra+ and other models with full-length grip Colt Government and Commander models plus almost any brand and model of mil-spec 1911.