Caliber: .45 ACP - Capacity: 10rds - Barrel: 4.56 - Sights: Fixed - Action: DA/SA - Frame: Black Polymer - Slide: Blued Steel - Length: 7.52 - Width: 1.42 - Height: 5.83 - Weight: 1.73 lbs (unloaded) - Additional Features: Integral MIL STD 1913 (Picatinny) rail molded into the polymer frame dust cover for mounting lights laser aimers and other accessories - Ergonomic grip profiles with user replaceable grip panels to adjust the feel and grip circumference of the weapon to suit individual operator hand size and shooting preference - HK45 grip-to-slide angle matches Model 1911s profile - Common high-capacity metal magazines with a capacity of 10 rounds - Ambidextrous controls with dual slide releases and enlarged magazine release - Uses the proven modified Browning linkless recoil operating system - O-ring barrel for precise barrel-to-slide lockup - Polygonal rifling for longer barrel life and better accuracy - Improved ergonomic control levers (safety and/or decocking) - Low profile drift adjustable 3-dot sights - Contoured and radiused slide with forward slide (grasping) grooves and anti-glare longitudinal ribs