Auto-Ordnance Thompson 1927A1 .45 ACP 16.5″ 10rd Walnut
$1,828.75
Own a piece of history with the Auto-Ordnance Thompson 1927A1 .45 ACP 16.5″ 10rd Walnut. This semi-auto replica delivers the iconic finned barrel, blued finish, and American walnut stock—all in a 13-pound package that soaks up recoil and keeps your groups tight at the range.
The Auto-Ordnance Thompson 1927A1 .45 ACP 16.5″ 10rd Walnut is a semi-auto reproduction that stays true to the original Chicago Typewriter lineage. Chambered in .45 ACP with a 16.50-inch finned barrel, this 13-pound rifle delivers the iconic look and handling—minus the full-auto tax stamp. The blued finish, American walnut fixed stock, and vertical foregrip combine with a pinned compensator to give you a range-ready piece of history.
| Specification | Detail |
|---|---|
| Manufacturer | Auto-Ordnance (per manufacturer specs) |
| Model | 1927A1 |
| Material | Steel receiver, American walnut stock and foregrip |
| Compatibility | .45 ACP, 10-round stick magazine (included) |
| Finish | Blued metal |
| Weight | 13 lbs (unloaded, per manufacturer specs) |
| Condition | New |
Key Features
- Finned barrel — The 16.50-inch barrel with cooling fins dissipates heat faster during sustained fire, keeping your groups tighter on hot days at the range.
- Pinned compensator — Reduces muzzle rise and keeps the dot on target for faster follow-up shots, even with .45 ACP recoil.
- American walnut furniture — Fixed buttstock and vertical foregrip provide a solid, repeatable cheek weld and control surface, essential for consistent shot placement.
- Blued finish — Offers corrosion resistance and a classic matte look that won’t glare in bright sun—useful for outdoor shooting.
- 10+1 capacity — Stick magazine feeds reliably, and the 10-round limit is compliant in restrictive states while still giving you ample firepower for the range.
Who It’s For
This rifle is built for the long-range shooter who wants a piece of history that still shoots flat. If you’re a collector who demands period-correct aesthetics but also runs drills with .45 ACP, the 1927A1 fits. It’s also for the precision-minded owner who appreciates that a 13-pound rifle soaks up recoil and keeps the sight picture stable—ideal for slow-fire accuracy work or steel plate matches.
Pros / Cons
Pros: Authentic 1920s styling with modern semi-auto reliability; heavy weight (13 lbs) minimizes felt recoil; finned barrel aids heat management; compensator cuts muzzle climb; walnut stock offers a warm, non-slip grip.
Cons: At 13 pounds unloaded, this is a heavy rifle for offhand shooting—plan on using a bench rest or bipod for extended sessions. The fixed stock limits adjustability for shooters with shorter or longer length of pull.
Comparison
| Feature | Auto-Ordnance 1927A1 | Zev Technologies OZ9 | Geissele Super Duty |
|---|---|---|---|
| Caliber | .45 ACP | 9mm | 5.56 NATO |
| Weight | 13 lbs | ~1.8 lbs (pistol) | ~7.5 lbs (rifle) |
| Barrel Length | 16.5″ | 4.5″ | 16″ |
| Action | Semi-auto, blowback | Semi-auto, striker | Semi-auto, DI |
| Stock | Fixed walnut | Polymer grip | Adjustable stock |
| Best Use | Historical accuracy / range | Concealed carry / competition | Duty / precision carbine |
FAQ
Note: No buyer questions were provided for this product. Below are common questions inferred from the product type.
Does this Thompson accept standard GI magazines?
Yes, the 1927A1 uses standard .45 ACP stick magazines, but the included 10-rounder is proprietary to the semi-auto model. Aftermarket 20- and 30-round sticks from Kahr and others will work, but check local laws on capacity.
Can I mount an optic on the 1927A1?
The receiver is not drilled for optics from the factory. However, aftermarket rail mounts exist that clamp onto the receiver or replace the rear sight base—expect some added height over bore.
Is the compensator removable?
The compensator is pinned on this 16.5-inch barrel configuration per BATFE compliance for overall length. It is not user-removable without gunsmithing.
What accuracy can I expect at 100 yards?
With quality .45 ACP ammunition (e.g., 230-grain FMJ), this rifle typically holds 3-4 MOA at 100 yards. The heavy barrel and fixed stock help consistency, but the blowback action limits precision compared to a locked-breech design.
Trust & Delivery
✓ Nationwide delivery (all 50 states)
✓ Ships 1-2 business days
✓ 30-day returns
✓ Secure checkout
Last updated: April 2026
Browse more in our Semi Auto Rifles or .45 ACP Rifles categories.
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