The 1911 Operator 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 eight-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 Tungsten Gray - Barrel 5.75 Forged Stainless Steel Threaded (.578 x 28) DLC 1:16 - Slide Forged Carbon Steel Tungsten Gray Cerakote Optics-Ready - Frame Forged Carbon Steel Tungsten Gray Cerakote - Sights Tritium Front Black Serrated Rear - Recoil System GI Style - Grips VZ Grips G10 - Magazines (2) 8-Round - Weight 42 oz - Length 8.6 - Height 5.25