Auto-Ordnance Thompson 1927A-1C .45 ACP 18in 50rd Drum

The Auto-Ordnance Thompson 1927A-1C .45 ACP 18in 50rd Drum is a semi-automatic carbine that pays homage to the classic Tommy Gun while being built for modern range use. This aluminum-alloy receiver model ships with both a 20-round stick and a 50-round drum magazine, giving you the iconic look and feel without the weight of a steel receiver.

Manufacturer	Auto-Ordnance (per manufacturer specs)
Model	1927A-1C Lightweight Deluxe
Material	Aluminum alloy receiver, walnut-grain polymer furniture
Compatibility	.45 ACP ammunition; accepts standard Thompson stick and drum magazines
Finish	Blued
Weight	Approximately 8.05 lbs (unloaded, per manufacturer specs)
Condition	New

Key Features

• Lightweight Aluminum Receiver — WHY IT MATTERS: Shaves off over 2 lbs compared to the steel version, making it easier to carry all day at the range or during a shoot.
• 50-Round Drum Magazine Included — WHY IT MATTERS: Gives you that classic gangster-era look and lets you run extended strings of fire without reloading.
• Walnut-Grain Polymer Furniture — WHY IT MATTERS: Offers the look of traditional wood without the weight or maintenance, and holds up better in wet or humid conditions.
• Fixed Battle Rear Sight & Pinned Front Blade — WHY IT MATTERS: Keeps the historic profile while providing a reliable, zero-maintenance sight system for close-to-medium range shooting.

Who It’s For

This carbine is for collectors who want a display piece they can actually shoot, range enthusiasts who love the nostalgia of the Thompson design, and new gun owners looking for a fun, reliable .45 ACP carbine that stands out in a crowd. It also appeals to anyone who appreciates American firearm history and wants a semi-auto version that won’t break the bank.

Pros & Cons

• Pros: Authentic Thompson styling, two magazines included (20-rd stick and 50-rd drum), lightweight aluminum receiver, reliable blowback action, and a price that undercuts many competitors.
• Cons: The aluminum receiver, while lighter, can feel less robust than steel; the fixed sights limit adjustment options; and the polymer furniture, though durable, lacks the warmth of real walnut.

Comparison

Feature	Auto-Ordnance Thompson 1927A-1C	Zev Technologies OZ9C	Geissele Super Duty 11.5
Caliber	.45 ACP	9mm	5.56 NATO
Weight (unloaded)	8.05 lbs	~1.6 lbs (pistol)	~6.3 lbs
Magazine Capacity	20+50 rounds	15 rounds	30 rounds
Receiver Material	Aluminum alloy	Stainless steel	7075-T6 aluminum
Price	$1,620.88	~$1,100	~$1,800
Best For	Collectors, history buffs, range fun	Concealed carry, competition	Duty use, home defense

FAQ

What magazines are compatible with this Thompson?

The 1927A-1C accepts standard Thompson stick and drum magazines in .45 ACP. It ships with a 20-round stick and a 50-round drum. Aftermarket options from Kahr and other makers are also available.

Is this a fully automatic machine gun?

No, this is a semi-automatic carbine. It fires one round per trigger pull, just like a typical rifle or pistol. The drum magazine gives you the classic look, but it’s still a legal semi-auto firearm.

Can I mount optics on this carbine?

The receiver does not come with a Picatinny rail. You would need a aftermarket mount or a gunsmith to add one if you want to use a red dot or scope. The iron sights are fixed and non-adjustable.

What is the barrel length and overall length?

The barrel is 18 inches, and the overall length is approximately 41 inches. This makes it a legal rifle under federal law, no tax stamp required.

Is this carbine reliable with all .45 ACP ammo?

Per owner reports, it runs best with standard-pressure 230-grain ball ammunition. Some hollow points may cause feeding issues due to the fixed feed ramp design. Stick with FMJ for best reliability.

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Related Categories
Semi Auto Rifles | .45 ACP Carbines | Collector Rifles

Last updated: April 2026