The Auto-Ordnance Thompson 1927A-1 Deluxe is a semi-automatic rifle chambered in .45 ACP with a 16.5-inch finned barrel (with compensator option up to 18 inches), American walnut stock and forend, and a blued steel frame. It holds 20 rounds, weighs 13 lbs, and includes a blade front sight and adjustable rear sight. Vertical foregrip and manual thumb safety included. 
 

Key Specifications: 

• Model: 1927A-1 Deluxe 
• Caliber: .45 ACP 
• Action: Semi-Automatic 
• Capacity: 20 Rounds 
• Barrel Length: 16.5 inches (finned with compensator option up to 18 inches) 
• Weight: 13 lbs. 
• Finish: Blued/Walnut 
   

Detailed Features: 

The blued steel frame and American walnut stock are faithful to the original design. The semi-automatic action allows for quick follow-up shots. The blade front sight and adjustable rear sight provide workable accuracy at typical ranges. A 20-round magazine gives ample capacity for range use. Manual thumb safety is easy to operate. The vertical foregrip improves control, especially during sustained shooting. The .45 ACP caliber delivers significant energy at close to medium distances. 
 
At 13 lbs, this is a heavy rifle that can be tiring to hold for extended periods.

The Thompson 1927A-1 Deluxe occupies a specific niche in the market, drawing collectors and enthusiasts who value its historical design as much as its function. The WWII and Prohibition-era association is a genuine part of its appeal, and that comes through in how owners talk about it.

Build quality is well-regarded. The walnut stock and blued finish are consistently described as solid and well-fitted. Performance at the range is generally reliable, with owners finding the .45 ACP caliber accurate at close to medium ranges.

Weight at 13 lbs is the main practical complaint. It can become tiring during extended use, and some owners find the ergonomics dated compared to modern designs. Price discussions are common given its premium cost. Customization interest runs toward sights, grips, and finishes rather than performance upgrades. Legal considerations around ownership vary by region and come up in community discussions.