The Auto Ordnance M1 Thompson US Army is a semi-automatic pistol caliber carbine chambered in .45 ACP with a 16.5-inch barrel. It has a capacity of 30+1 rounds and carries US Army markings consistent with the M1 variant configuration. The M1 Thompson pattern omits the drum magazine well in favor of a straight box magazine design. 
 

Key Specifications 

• Brand: Auto Ordnance 
• Model: M1 Thompson US Army 
• Caliber: .45 ACP 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 16.5 in 
   

Detailed Features 

• 16.5-inch barrel keeps the carbine in standard transfer configuration 
• M1 pattern design with US Army markings 
• 30+1 round capacity 
• Available in blemished variant with cosmetic imperfections 
• Semi-automatic .45 ACP pistol caliber carbine

The M1 Thompson US Army version attracts buyers who want the M1 profile over the more ornate Commando or Bootlegger variants. Owners appreciate the cleaner lines of the M1 layout and the box magazine feeding, which many find more reliable than the drum-fed configurations. US Army markings add to the appeal for collectors.

At the range, the 16.5-inch .45 ACP carbine is described as easy to shoot, with low recoil and manageable weight. Some owners note the trigger is heavier than what modern carbine shooters expect, which is a common characteristic of the Thompson platform across the lineup.

Blemished units generate mixed reactions. Some buyers receive guns with barely noticeable marks; others get pieces with more visible surface flaws. Value relative to the blemished discount is generally considered fair, though buyers who want a pristine example should seek the standard production version.