Compact and Pro Carry pistols have 4-inch bushingless match grade bull barrels. Compact Stainless II has a shorter frame yet retains 7-round magazine capacity. Kimber aluminum frames have been tested to over 20,000 rounds without evidence of meaningful wear. All Compact and Pro Carry pistols use a proven single recoil spring design.1911 PRO CARRY II SPECIFICATIONSCaliber:.45ACPCapacity:7 RoundsBarrel Length:4"Barrel:Steel, MatchTwist:16 LHWidth:1.28"Height:5.25"Frame Material:Aluminum, Satin SilverSlide Material:Stainless Steel, Satin SilverSights:Low ProfileSight Radius:5.7"Grips:Black Synthetic, Double DiamondTrigger:Aluminum, MatchTrigger Weight:4 - 5 lbsGuide Rod:Full LengthRecoil Spring:20 lbsWeight:28 oz