The M45A1 Close Quarters Battle Pistol is the USMC's official 1911-pattern service pistol, selected through a competitive process and built at Colt's Hartford factory to Marine Corps specifications. Features a Picatinny rail, brown G10 grips, a Desert Tan Cerakote finish, and a proprietary dual-spring recoil system. Type: Semi-Auto Pistol Action: Single-Action Caliber: .45 ACP Capacity: 7 Year introduced: 2012, USA Weight: 39 oz Overall length: 8.5" Status: Active Military use: Yes Intended use: Military, Duty