Colt's Defender is their compact Officer-replacement 1911 with a 3-inch barrel, lightweight aluminum frame, and a Satin Nickel finish. Designed to fill the same role as the discontinued Officer model with improved reliability from a refined recoil spring system. Type: Pistol Action: Semi-Automatic Caliber: .45 ACP Capacity: 7 Year introduced: 1998, USA Weight: 23.5 oz Overall length: 6.75" Status: Active Intended use: Carry, Duty