Iconic 1911 Pistols Have Finally Been Retired From Marine Corps Service
The Marine Corps’ time as the last major U.S. military user of the legendary 1911 pistol has come to an end.
by Joseph Trevithick| UPDATED Jun 21, 2023 4:42 PM EDT
The U.S. Marine Corps has removed the last of its .45 caliber M45A1 Close Quarters Battle Pistols from service. The M45A1s, which are heavily upgraded variants of the venerable Colt M1911, have now been replaced by 9x19mm M18 pistols. The Marines had been the last major American military user of M1911-series pistols, though other versions remain in increasingly limited service in the U.S. special operations community.

Marine Corps Systems Command (MARCORSYSCOM) confirmed to The War Zone that the replacement of the M45A1s with new M18s began last year and was completed by October 2022. M45A1s had previously been issued primarily to Marine special operations and reconnaissance units, as well as Special Reaction Teams assigned to the service's Provost Marshal's Office.
The service had announced its intention to replace all of its standard-issue sidearms with M18s in 2019. The M18 is the compact variant of the Sig Sauer Modular Handgun System pistol family, or MHS, which the U.S. Army first adopted in 2017 and is now becoming the default sidearm across much of the U.S. military. This includes the U.S. Air Force, where the M18 was also selected to replace the last of that service's aging .38 caliber M15 revolvers, as well as other more modern pistols.
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