Tag Archive | differences between M1911 and M1911A1

Just what the “A1” means

Here is a great image from the Cody Museum showing a Great War-era Colt M1911 (bottom) compared to a post-war M1911A1.

Via the Cody Museum

The A1 designation came about in 1924 and changes to the standard include a thicker front sight, an arched and checkered mainspring housing (to improve aim/ergonomics), a longer hammer spur (to help curb reports of slide bite on firing), a shorter trigger with checkering and relief cuts in the guard to help those with smaller hands, and a longer grip safety spur.

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