Colt M45A1: A Modernized M1911 For The Marines

posted on July 3, 2021
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Coltm45a1

In Oct. 2016 the U.S. Marine Corps announced Glock 19s would replace the .45 ACP-chambered Colt M45A1s carried by members of its Marine Expeditionary Unit Special Operations Capable (MEUSOC) teams. The Picatinny-railed 1911s were officially adopted by the elite troops in 2012, and featured all the special touches required by those operating on or behind the front lines in the global war on terrorism.

Fans of the 1911 expressed their disgust as nearly 4,000 of the handguns were de-commissioned. The silence was deafening, though, when they became available and Colt continued to produce a civilian variant. At more than 100 years old, there’s undeniable attraction to the John Moses Browning design, even brand new ones with elegant upgrades that enhance performance without compromising his vision. Scarcely mentioning the soon-be-collectible kept demand low, and availability proportionately high.

“I was able to lay my hands on one of the decommissioned M45A1s to examine and evaluate it,” one author for American Rifleman wrote two years ago. “These decommissioned Colts will continue to be a hot item among both shooters and collectors for the foreseeable future. The pistols are exceptional purely as shooters, and scarce and significant for several military and historic reasons. We are fortunate that they found their way onto the public market.”

Models mustered out of the Marine Corps are scarce today and fetch lofty prices, but factory-fresh models with nearly identical features are still available from Colt. They feature Novak three-dot night sights, M1913-spec Picatinny rail and Decabond brown coating with nicely matching Desert Tan G10 grips.

Barrel length is 5 inches, dual recoil springs reduce perceived recoil and magazine capacity is seven rounds. A slight bevel at the magazine well enhances reload speed and the thumb safety is ambidextrous. Weight of the gun, empty, is listed at 40 ounces. MSRP comes in at $1,699.  

Latest

Glock Slimline Magazines 1
Glock Slimline Magazines 1

Review: Glock's New Slimline Magazines

Glock has finally introduced its own 15-round magazine for its slimline models G43X and G48.

Serious Sluggers: The Savage Arms 212 & 220 Harvesters

For hunters who rely on slug guns to fill their tags, Savage Arms has released updated models of its 212 and 220 Harvester bolt-actions.

Gun of the Week: Heckler & Koch G36 .22 LR

Due to Germany's strict firearm-export laws, along with U.S. firearm import laws, the closest any HK fan could get to owning a real G36 was in the form of the HK SL8. Now, though, Heckler & Koch has introduced its G36 .22 LR, which, profile-wise, is a G36 in all but chambering.

The Armed Citizen® July 17, 2026

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Standing Strong for Colorado’s Law-Abiding Gun Owners Ahead of Critical Midterms

NRA EVP Doug Hamlin and NRA-ILA Executive Director John Commerford traveled to Denver this week to discuss gun rights.

A Visit to the New Smith & Wesson Academy

Let the training (re)commence at Smith & Wesson's new Academy in Tennessee.

Interests



Get the best of American Rifleman delivered to your inbox.