9mm vs 45 Has The Marine Corps Settled It?

After two decades where MARSOC operators were allowed to carry a custom-built Colt 1911 chambered in .45ACP, in early 2015 the door was cracked open allowing for them to choose Glock 19’s (chambered in 9mm) instead of their larger counterpart. Well that door has now been opened and shut, and it has been shut for good on John M. Browning’s classic 1911 design. This recent policy and operational change means the U.S. Marine Corps’ own special arm of SOCOM (U.S. Special Operations Command) have also come to terms with the age old debate of 9mm vs. .45ACP.

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