1911a1 Markings - Remington Rand

A small "Ordnance wheel" or "crossed cannons" stamp is typically located on the right side of the frame behind the grip. Sight M1911 3. Inspector & Proof Marks

Extremely rare anomalies exist. Some slides have been found marked on the left side, though these are not standard military issue and likely represent prototypes or special contract pieces.

Remington Rand slide markings changed over time, usually classified into "Types." remington rand 1911a1 markings

Symbols like "RIA" (Rock Island Arsenal), "SA" (Springfield Armory), or "AA" (Augusta Arsenal) on the frame indicate a rebuild.

Remington Rand did not manufacture its own pistol barrels. Instead, the company sourced barrels from subcontractors, most notably and Springfield Armory . This makes barrel markings another important diagnostic feature for determining originality and parts configuration. A small "Ordnance wheel" or "crossed cannons" stamp

The Remington Rand 1911A1 was produced during World War II, specifically between 1941 and 1945. The pistol was manufactured by Remington Rand, a company that was contracted by the U.S. government to produce the 1911A1 for military use. The Remington Rand 1911A1 was designed to meet the needs of the U.S. military, which required a reliable and durable sidearm that could withstand the rigors of combat.

"M1911A1 U.S. ARMY" located forward of the slide stop pin. Some slides have been found marked on the

Does the number fall into one of the five authorized Remington Rand blocks?

The marking indicates that the pistol successfully passed the proof-firing test. Ordnance inspectors would fire a high-pressure proof cartridge through the pistol to verify that the barrel and action could withstand standard service pressures. This mark appears in at least two locations: on top of the slide ahead of the rear sight, and on the left side of the frame near the magazine release button.

A pistol with an "X" preceding the serial number typically indicates it was rebuilt, sometimes by the Raritan Arsenal or Tokyo Arsenal, and renumbered.