Review of the Colt M45A1 Marine Corps Pistol

Published on September 2, 2018
Duration: 14:44

This review critically examines the Colt M45A1, a .45 ACP variant adopted by the US Marine Corps. Despite its 1911 heritage, the M45A1 faced significant issues including frame/slide cracking, low capacity (7 rounds), and finish failures. The review highlights how modern alternatives like the Sig P227, HK USP Tactical, and Glock 21 offer superior capacity and reliability, leading to the USMC's eventual shift to the Glock 19.

Quick Summary

The Colt M45A1, adopted by the USMC, suffered from critical failures like cracked frames/slides and finish issues. Its 7-round capacity was also a disadvantage, leading the USMC to eventually adopt the lighter, higher-capacity Glock 19.

Chapters

  1. 00:00Intro: M1911 Lore vs Modern Pistols
  2. 01:07Marine Corps Adoption & Testing Failures
  3. 02:29Performance Issues in Competition
  4. 03:34Modern .45 ACP Alternatives Compared
  5. 05:11M45A1 Design Features & Finish Problems
  6. 06:27Why the USMC Switched to Glock 19
  7. 09:46Commercial Release & Collector Models
  8. 11:44Range Testing & Final Verdict

Frequently Asked Questions

What were the main problems with the Colt M45A1 adopted by the US Marine Corps?

The Colt M45A1 faced significant issues including frames and slides cracking during initial testing, a low 7-round capacity, and problematic Cerakote finish failures. These issues led to its eventual decommissioning and replacement.

Why did the US Marine Corps replace the Colt M45A1 with the Glock 19?

The USMC transitioned to the Glock 19 because it offers half the weight, double the ammunition capacity, and is significantly easier for the average soldier to shoot accurately compared to the heavier recoiling .45 ACP M45A1.

How does the Colt M45A1 compare to modern .45 ACP pistols in terms of capacity?

The M45A1 has a capacity of 7+1 rounds. Modern alternatives significantly outperform it, with the Sig P227 holding 14 rounds, the HK USP Tactical 12 rounds, and the Glock 21 holding 13 rounds.

Are there any collectible versions of the Colt M45A1?

Yes, early commercial 'reject' models of the M45A1, often featuring crossed-out 'USMC' markings, have become highly sought-after by collectors due to their unique history and association with the military trials.

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