The Thompson 1927A-1 short-barrel rifle from Auto-Ordnance is an NFA-classified platform chambered in .45 ACP with a 10.5-inch finned barrel and pinned Cutts compensator. It pairs a blued/steel receiver with walnut furniture, including a vertical foregrip and a detachable buttstock, and uses semi-automatic operation. This configuration is intended for owners familiar with NFA compliance and SBR operation.
Key Specifications
- The caliber is .45 ACP.
- The action is Semi-Auto.
- The barrel measures 10.5 inches and features a finned profile.
- The muzzle is fitted with a pinned Cutts compensator.
- The furniture includes a walnut vertical foregrip and a detachable walnut buttstock.
- The overall length is 35 inches.
- The receiver and major components are constructed from steel.
- Sighting is provided by adjustable open rear sights.
- ATF classification is Short Barrel Rifle (NFA).
- Includes one 20-round stick magazine.
This Thompson 1927A-1 SBR is a purpose-built, NFA-regulated firearm that combines period-correct styling with modern manufacturing for owners who require a compact .45 ACP platform. Its removable buttstock, vertical foregrip and compensator make it a distinct configuration suited to collectors, range use, and NFA-regulated short-barrel rifle owners seeking historically inspired ergonomics and a robust steel construction.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.




