The Thompson 1927A-1 Deluxe is a semi-automatic pistol chambered in .45 ACP that draws directly from the Thompson submachine gun's visual language: horizontal foregrip, walnut furniture, blued 10.5-inch barrel. It's a large gun by any measure: 23.3 inches overall and 5.14 lbs unloaded. 
 

Key Specifications 

• Brand: Thompson 
• Model: 1927A-1 Deluxe 
• Caliber: .45 ACP 
• Action Type: Semi-Automatic 
• Barrel Length: 10.5 inches 
• Overall Length (OAL): 23.3 inches 
• Capacity: 10+1 rounds 
• Weight: 5.14 lbs 
• Grip Material: Walnut 
• Sights: Blade Front & Adjustable Rear 
• Finish Color: Black (Blued Barrel Finish) 
   

Detailed Features 

• Semi-Automatic Action: Standard semi-auto operation in .45 ACP, holding 10+1 rounds. The caliber delivers meaningful energy at typical defensive distances. 
   
• Adjustable Rear Sight: The blade front and adjustable rear let you dial in a consistent zero rather than living with fixed sights. 
   
• Walnut Grip: The wood furniture is functional and adds to the period-correct look. It holds up fine under normal range use. 
   
• Blued Steel Construction: High-quality blued steel finish. Looks good and handles routine use well, though it needs more care than a parkerized or cerakoted surface in wet conditions.

The Thompson 1927A1 Deluxe tends to attract buyers who want something that shoots well and looks different from modern polymer guns. The .45 ACP action gets consistent marks for reliability, and shooters generally report manageable recoil for the caliber. The walnut furniture and blued finish draw attention at the range.

The size is the main practical limitation most owners acknowledge. At 23.3 inches and over 5 lbs, it's a range gun and collector piece, not an everyday carry option. Most buyers seem to know this going in.

Price comes up regularly. The 1927A1 costs more than many comparable .45 ACP pistols, and some buyers debate whether the heritage and aesthetics justify the premium over purely functional alternatives. That's a legitimate question without a universal answer. Optics installation and getting familiar with the controls takes some adjustment time if you're coming from a standard handgun layout.