The Thompson 1927A-1 Commando is a semi-automatic rifle chambered in .45 ACP, based on the classic Thompson design with a 16.5-inch barrel, walnut stock, and lever safety. At 13 lbs and 41 inches overall, it's substantial in hand. 
 

Key Specifications 

• Model: 1927A-1 Commando 
• Caliber: .45 ACP 
• Action: Semi-Automatic 
• Capacity: 20+1 rounds 
• Barrel Length: 16.5 inches 
• Overall Length: 41 inches 
• Weight: 13 lbs (208 oz) 
• Finish: Brown with walnut stock 
• Safety Type: Lever safety 
• Trigger Type: Standard trigger 
   

Detailed Features 

The 16.5-inch barrel delivers adequate velocity for .45 ACP at typical pistol-caliber distances. Twist rate is 1:16", which stabilizes standard .45 ACP projectiles reliably. Sights are a blade front and open adjustable rear. The walnut stock has a painted black finish. The steel construction throughout gives the rifle its 13 lb weight, which contributes to reduced felt recoil despite the .45 ACP chambering. The 20+1 capacity uses standard Thompson-pattern magazines.

The 1927A-1 attracts two kinds of buyers: collectors drawn to its historical association with Prohibition-era enforcement and WWII use, and range shooters who want a fun, relatively low-recoil pistol-caliber carbine. Both groups tend to come away satisfied with it as a range piece.

Reliability and accuracy at practical pistol-caliber distances come up positively in most feedback. The .45 ACP recoil is mild for a 13 lb rifle, which makes extended shooting sessions comfortable. Weight is the consistent criticism. 13 lbs is heavy to carry for any distance, and most owners acknowledge it's a range gun rather than a field gun. Price relative to more modern pistol-caliber carbines comes up; some feel it's high for a recreational shooter, while collectors see the historical design as justifying the premium. It's generally not recommended as a primary home defense or tactical firearm.