The 1911 OperatorA(R) AOS in .45 ACP delivers a handgun packed with duty-grade features that serious shooters demand. It comes equipped with a 5.75" threaded barrel for the attachment of muzzle devices, G10 grips, ambidextrous safety, two nine-round magazines with bumper pads, forward cocking serrations, and an integral Picatinny rail, making it a must-have tool for self-defense. Enhanced with AOS, the Operator now supports a wide variety of popular optics, including RMR, Shield, Delta Point Pro, and Docter. Each AOS plate integrates a rear sight that ensures proper optic height and an intuitive sight picture, providing visible co-witnessing in nearly all optic configurations. If you're looking for a no-nonsense, defensive-grade pistol in .45 ACP that's ready to serve, the Operator is your answer. Caliber .45 ACP Color Black Barrel 5.75" Forged Stainless Steel, Threaded (.578 x 28), DLC, 1:16 Slide Forged Carbon Steel, Black CerakoteA(R), Optics-Ready Frame Forged Carbon Steel, Black CerakoteA(R) Sights Tritium Front, Black Serrated Rear Recoil System GI Style Grips VZ GripsA(R) G10 Magazines (2) 8-Round Weight 42 oz Length 8.6" Height 5.25"