An updated M1911 platform commissioned by the Special Operations Command of the United States Marines in 2012. In the late 1970’s the United States armed forces began seeking 9mm sidearms to replace the .45 caliber - resulting in the near-universal adoption of the Beretta M9. The Marines, interested in improving the sidearms issued to MEU(SOC), eventually adopted a modified Kimber M1911 originally employed by the Los Angeles police department. This Interim Close-quarters Battle (ICQB) pistol was only slightly different from the original M1911 design. In 2012, the Marines commissioned 12,000 Colt 1911 Rail Guns - meeting and exceeding the specifications required of the ICQB pistol, the now-designated M45 CQBP features an upgraded 1911 platform with updated mechanics, a stainless-steel National Match grade barrel, and an accessory rail.