Firearms

Union Switch & Signal M1911A1 (arsenal rework)

Specifications

About

Notable Variants

Aftermarket Ecosystem

Historically Significant Examples

Serial Number Data

Production data from factory records and collector research. Year ranges are approximate for pre-1968 firearms.

Years	Serial Range	Count	Factory	Country	Confidence

Arsenal-reworked US&S 1911A1 with mixed parts from multiple contractors.

Type: Pistol

Action: Semi-Automatic

Caliber: .45 ACP

Capacity: 7

Year introduced: 1945, USA

Weight: 38.5 oz

Overall length: 8.6"

Status: Discontinued

Military use: Yes

Intended use: military, collector