The Auto-Ordnance Thompson M1 Carbine SBR (brand part no. AOM230) is a short-barreled semi-auto rifle from Auto-Ordnance, chambered in .30 Carbine and built around the same walnut furniture and lines as the original M1 Carbine. Its 12-inch barrel carries a 1/2-28 threaded muzzle for a suppressor or compensator, and the forend adds M-LOK slots so shooters can mount a light, sling, or foregrip without the bulk of the original wood profile. Fifteen-round magazines feed the semi-auto action, and a matte black metal finish keeps maintenance simple. It’s a natural fit for collectors who want a historically styled carbine sized down for a suppressor host, a truck gun, or a compact home-defense rifle.

Key Specifications

• Chambered in .30 Carbine, the original lightweight cartridge the M1 Carbine platform was built around.
• Features a 12-inch barrel, short enough to qualify as an SBR while staying easy to maneuver indoors.
• Ships with 15-round magazines, a solid capacity bump over the original 5-shot wartime feeding.
• Runs a semi-auto action, cycling one shot per trigger pull for reliable, straightforward operation.
• Threaded muzzle uses a 1/2-28 pattern, ready for a suppressor or muzzle device without gunsmithing.
• Dressed in genuine walnut stock and handguard, keeping the classic M1 Carbine look and feel.
• The handguard adds M-LOK slots on the underside for mounting a light, bipod, or foregrip.
• Finished in matte black metal, a durable, non-reflective coating that’s easy to maintain.
• Overall length runs about 30 inches, compact enough for close-quarters use or vehicle storage.
• Weighs approximately 5 pounds unloaded, light enough for extended carry.

Frequently Asked Questions

Is this an NFA item? Yes. As an SBR, it’s a Title II firearm requiring an approved ATF Form 4 and transfer through an NFA-licensed dealer.

What caliber does it shoot? The M1 Carbine SBR is chambered in .30 Carbine, the same light-recoiling cartridge the original wartime carbine used.

Can I mount a suppressor on it? Yes. The 12-inch barrel carries a 1/2-28 threaded muzzle, ready for a properly rated .30-caliber suppressor.

Buy the Auto-Ordnance Thompson M1 Carbine SBR .30 Carbine 15+1

This is a Title II item regulated under the National Firearms Act. Purchase requires an approved ATF Form 4, no federal transfer tax, and transfer through a licensed NFA (SOT/Class 3) dealer, with an extended federal approval wait before delivery. Order through Auto-Ordnance‘s short-barrel rifle lineup and our Lubbock, Texas team will walk you through the transfer process.