SPECS: Slide/Barrel – Steel, blued, matte finish. Magazine – Aluminum, black. 7¼” (18.4cm) overall length. 23.1 oz. (655g) total weight. Fits centerfire single-stack 1911 Govt/Commander and clones chambered in .45 ACP, .40 S&W, .38 Super, and 9mm. Conversion kit's ejector may require fitting to ensure proper clearance of frame-mounted ejector on some pistols.