The Colt M45A1 Government Model Marine Pistol is a single-action semi-automatic pistol chambered in .45 ACP, originally developed as the Close Quarters Battle Pistol (CQBP) for the United States Marine Corps. This combat-proven firearm incorporates a 5-inch stainless steel National Match barrel and is built on a rugged forged stainless steel frame and slide completely treated in a matte Zinc Brown IonBond/Decobond finish for maximum corrosion and wear resistance. It operates on Colt’s drop-safe Series 80 firing pin safety system paired with a specialized Dual Recoil Spring System that noticeably buffers high-pressure felt recoil while extending the overall service life of the springs. The tactical layout is rounded out by an integrated MIL-STD-1913 Picatinny accessory rail, genuine low-profile Novak 3-dot tritium night sights, a solid aluminum trigger, an extended ambidextrous thumb safety, and aggressive desert tan-and-black checkered G10 composite grips. The standard single-stack magazine holds 7 rounds, giving it an overall field capacity of 7+1.