Description
Few firearms turn heads at the range like a Thompson, and this one shows up with the full look: finned barrel, compensator, polished American walnut, and that unmistakable 100-round drum hanging underneath. The T5100D is Auto-Ordnance's 1927A-1 Deluxe carbine built on the T5 lightweight aluminum receiver, which trims the package down to about 9.5 pounds. That's a real difference you'll feel compared to the all-steel versions, especially once you load up the drum and spend an afternoon working through it.
Classic Thompson 1927A-1 Details Done Right
Kahr Arms has carried the Auto-Ordnance name since 1999, and these carbines are reproduced from the original Thompson engineering drawings. The blued metal pairs with a genuine walnut buttstock, pistol grip, and vertical foregrip for that period-correct profile. Up front you get a pinned blade sight matched to an open adjustable rear, and the 16.5 inch finned barrel wears a compensator that stretches the overall length to 41 inches. It runs a simple blowback action chambered in .45 ACP with a 1:16 right-hand twist, so it's happy with standard 230 grain ball ammo all day long.
Why the T5100D Drum Package Stands Out
The drum is the star here. It's manufactured in the U.S. to specs as close to the original as possible, and 100 rounds of .45 ACP on tap is an experience everybody at the range will want a turn with. When you'd rather keep things slim, the included 20-round stick magazine slides in for a lighter, easier-handling setup. Two feeding options, one classic silhouette.
Who This Thompson Carbine Suits
Collectors love these for the historical connection, but this isn't a safe queen by design. It's a genuinely enjoyable plinker and conversation starter that shoots soft thanks to the .45 ACP carbine platform and that compensated barrel. If you've ever wanted the classic Tommy Gun look without the all-steel heft, the lightweight T5100D with the full drum package is the one to grab.
Key Specifications
- Manufacturer: Auto-Ordnance (Kahr Arms)
- Model: 1927A-1 Lightweight Deluxe Carbine
- MPN: T5100D
- UPC: 602686212083
- Caliber: .45 ACP
- Action: Semi-Auto, Blowback
- Capacity: 100+1 (Drum) / 20+1 (Stick)
- Barrel Length: 16.5" Finned (18" with compensator)
- Twist Rate: 1:16 RH
- Receiver Material: Aluminum
- Metal Finish: Blued
- Stock: American Walnut with Vertical Foregrip
- Sights: Blade Front, Open Adjustable Rear
- Overall Length: 41"
- Weight: 9.5 lbs
What’s Included
- Auto-Ordnance Thompson 1927A-1 Deluxe carbine
- One 100-round drum magazine
- One 20-round stick magazine
- Owner's manual
Frequently Asked Questions
What makes the T5100D lighter than other Thompson 1927A-1 carbines?
The T5100D is built on Auto-Ordnance's T5 aluminum receiver instead of the solid steel receiver used on T1 models. That drops the weight to roughly 9.5 pounds, compared to around 13 pounds for the steel versions. It makes a noticeable difference during long range sessions, especially with a loaded drum attached.
Does the Thompson T5100D come with both the drum and a stick magazine?
Yes, this package ships with the 100-round drum plus a 20-round stick magazine. The drum is U.S. made to specs as close to the original as possible, while the stick mag gives you a slimmer, lighter option for casual plinking. Additional 10, 20, 50, and 100-round magazines are available separately.
Is this a full-auto Tommy Gun?
No, this is a semi-automatic reproduction that fires one round per trigger pull. It runs a simple blowback action chambered in .45 ACP and is built from the original 1927A-1 engineering drawings, so you get the authentic look and feel in a modern semi-auto carbine.
What ammo runs best in the Thompson 1927A-1 Deluxe?
Standard pressure 230 grain FMJ ball ammo is the go-to for these carbines, and it's what the platform was originally designed around. The round-nose profile feeds smoothly from both the drum and stick magazines. Give the drum a proper wind per the manual and keep the gun lubed, and it'll run happily through long range days.




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