The Thompson 1927A1 is a semi-automatic .45 ACP rifle built on the classic Thompson submachine gun design. The 16.5-inch finned barrel and blued steel construction with American walnut stock are period-correct in appearance. At 9.5 lbs and 41 inches overall, it's heavier and longer than most modern carbines. Capacity is 20+1 rounds from the stick magazine. 
 

Key Specifications 

• Brand: Thompson 
• Model: 1927A1 
• Caliber: .45 ACP 
• Action Type: Semi-Automatic 
• Capacity: 20+1 rounds 
• Barrel Length: 16.5 inches (finned) 
• Overall Length: 41 inches 
• Weight: 9.50 lbs 
• Finish: Blued with American Walnut stock 
   

Features 

The finned barrel is a functional nod to the original design's cooling requirement under sustained fire, though on a semi-automatic it's primarily aesthetic. The lever safety is positive. Blade front sights paired with fixed battle rear sights are standard. The solid steel construction gives it a genuine weight and feel that reproductions in polymer cannot replicate. 
 
This rifle appeals primarily to collectors and enthusiasts who want to shoot a functioning piece based on American firearm history. It's capable at range distances typical for .45 ACP and reliable, but it's not a practical choice where weight or compactness matters.

The Thompson 1927A1 attracts buyers who specifically want the classic design and the shooting experience it provides. The blued finish and walnut stock combination draws consistent appreciation. Owners comment that it looks and feels like the real thing rather than a modern replica made cheap.

Reliability and accuracy feedback are positive. At .45 ACP distances it shoots accurately and cycles reliably with standard ammunition. The weight is a consistent discussion point. 9.5 lbs is substantial for a carbine, and it's a deliberate characteristic of the design rather than something Kahr Arms could eliminate without changing the look.

.45 ACP cost and the rifle's size relative to practical applications come up regularly. Buyers know going in that this is more of a collector's shooter than a field tool. Drum magazines (sold separately) are frequently discussed, as they complete the historical look many buyers are after. Overall sentiment is positive and specific: owners bought it for what it is and are satisfied.