Colt-1911-military-parts Today

While most parts are interchangeable between the M1911 and M1911A1, specific external features differentiate the two military eras:

: Authentic military frames must have "UNITED STATES PROPERTY" stamped on the frame (usually above the serial number). colt-1911-military-parts

: Look for "MODEL OF 1911 U.S. ARMY" (or Navy/USMC) on the right side for early models. Later M1911A1 models may have manufacturer-specific stamps like Ithaca or Remington Rand, though Colt was the primary producer. While most parts are interchangeable between the M1911

If you are verifying parts for a specific restoration, these physical changes were introduced in 1924 to create the A1 variant: M1911 (Original) M1911A1 (Improved) Arched (curved) Trigger Long, smooth Short, checkered Frame No cutouts behind trigger Finger relief cutouts added Grip Safety Short spur Longer spur (to prevent "hammer bite") Hammer Spur Grips "Double Diamond" walnut Checkered plastic (standardized later) 3. Sourcing and Maintenance Colt 1911. Is it a "Black Army"? Is it a "Black Army"

: Frames often bear the initials of military inspectors (e.g., "G.H.D." for Guy H. Drewry) near the magazine release or trigger guard. 2. Physical Differences: M1911 vs. M1911A1