The Auto-Ordnance Thompson 1927A-1C Lightweight Deluxe is a semi-automatic carbine chambered in .45 ACP, built with an aluminum receiver to cut weight versus an all-steel Thompson. It has a 16.5-inch finned barrel fitted with a pinned Cutts compensator, bringing the barrel-and-compensator assembly to 18 inches overall. Fixed battle sights and walnut grain polymer furniture round out the period-correct look. 
 

Key Specifications 

• Brand: Auto-Ordnance 
• Model: 1927A-1C Lightweight Deluxe 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 20+1 
• Barrel Length: 16.5" 
• Receiver Material: Aluminum 
• Finish: Blued 
   

Detailed Features 

• Finned barrel with a pinned Cutts compensator for muzzle control 
• Fixed battle rear sight paired with a front post for iron-sight use 
• Walnut grain polymer stock and grip finish the classic Thompson profile 
• Aluminum alloy receiver keeps the carbine lighter than an original steel gun 
• Ships with a single 20-round stick magazine

Owners of the 1927A-1C line generally like that the aluminum receiver cuts noticeable weight from the original Thompson design, and most report the semi-automatic action running reliably once it's broken in. A handful mention the finned barrel and compensator need a wipe-down after a range session since they trap fouling in the fins.

The stick magazine and Thompson-style grip feel unfamiliar to shooters coming from modern carbines, but fans of the platform enjoy the nostalgia and the distinct manual of arms. The compensator noticeably tames muzzle rise, though a few owners note the front-heavy balance takes some getting used to.

This is a collector-oriented purchase as much as a shooter, and buyers weigh it against other Thompson clones on fit and finish. Owners who already have period magazines or accessories see it as an easy addition, while newcomers sometimes find the stick-magazine ecosystem more limited than modern AR options.