Firearms

Thompson Thompson M1928A1 .45 ACP (Semi-Auto)

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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

The iconic Thompson submachine gun, semi-auto import. Horizontal foregrip, actuator on top. Used by US military, FBI, and organized crime. Drum or box magazines. Semi-auto reproductions by Auto-Ordnance.

Type: Pistol Caliber Carbine

Action: Semi-Automatic

Caliber: 45 ACP

Capacity: 20

Year introduced: 1928, USA

Weight: 128 oz

Overall length: 34.5"

Status: Discontinued

Military use: Yes

Intended use: Military, Collector, Home Defense