The Kimber Kimpro Tac-Mag magazine is the ultimate magazine for 1911 pistols. The magazine tube is highly polished stainless steel that is heat treated for optimal strength. Super glide Teflon coated extended follower, rocket wire springs and exceptional round recognition from enlarged numbered holes. Removable stainless steel base plates with two supplied slam pads offers three configurations, changeable in seconds. Fits Kimber Compact and Ultra models; Colt Officer models.