The Thompson 1927A-1 Deluxe is a semi-automatic rifle chambered in .45 ACP with an 18-inch finned barrel, blued steel receiver, and walnut stock -- a civilian-legal reproduction of the classic Thompson design. 
 

Key Specifications 

• Brand: Thompson 
• Model Name: 1927A-1 Deluxe 
• SKU: T110S 
• Caliber: .45 ACP 
• Action Type: Semi-Automatic 
• Barrel Length: 18 inches (Finned) 
• Overall Length: 41 inches 
• Capacity: 10+1 rounds 
• Weight: 13 lbs (208 oz) 
• Finish: Blued with Walnut Stock 
• Safety Mechanism: Manual Thumb Safety 
• Sights: Blade Front / Adjustable Rear 
   

Detailed Features 

The semi-automatic action fires one round per trigger pull. The .45 ACP chambering delivers strong energy at close to medium range. The walnut stock and blued steel construction give the rifle a period-correct appearance. The adjustable rear sight pairs with a blade front for basic aiming. A manual thumb safety is the primary control. 
 

Usage 

At 13 lbs this is a heavy rifle, which limits its practicality for field carries but contributes to stability at the range. The Thompson 1927A-1 appeals primarily to collectors and historical enthusiasts who want a functional piece, though it also works for recreational range shooting and home defense.

Historical appreciation runs through most owner discussions -- the connection to the Prohibition era and the rifle's iconic silhouette are part of why people buy it. The blued steel and walnut construction are praised as well-executed for a production piece.

On the functional side, reliability and accuracy are noted as solid. The .45 ACP caliber is popular for its stopping power. The weight at 13 lbs is an honest limitation that comes up in most practical assessments -- it is noticeably heavy compared to modern semi-autos and affects handling during extended sessions.

Cost of ownership is a recurring topic: the rifle is priced toward the higher end, and .45 ACP ammunition costs and availability are flagged as ongoing considerations. For buyers who value the historical design and want a functional collector piece, sentiment is broadly positive.