Is it compatible with original M1A1 Thompson 20-round magazines?

Yes, the Auto-Ordnance 1927A-1 is designed to accept original and reproduction 20-round and 30-round stick magazines for the M1A1 Thompson. However, you must ensure your state and local laws permit possession of standard-capacity magazines before sourcing them from a vendor like GunMag Warehouse or Keep Shooting.

Does the threaded barrel accept modern suppressors?

No, the barrel is not threaded in the modern 1/2x28 or 5/8x24 pattern. It uses a proprietary thread to mount the included Cutts compensator. Adapting it for a modern suppressor would require custom gunsmithing, potentially affecting the firearm's value and historical appearance.

How long does shipping to an FFL take?

From Ironclad Armory, standard processing and shipping to your chosen Federal Firearms License holder typically takes 3-5 business days once payment clears. The FFL will then conduct the mandatory background check, which can add another 15 minutes to several days depending on your state's system.

Can I replace the fixed stock with a pistol grip?

Replacing the fixed stock with a pistol grip would create a firearm with a barrel under 16 inches and an overall length under 26 inches, classifying it as a Short-Barreled Rifle under the National Firearms Act. This requires submitting a Form 1 to the ATF, paying a $200 tax stamp, and waiting approximately 9 months for approval before modification.

Auto-Ordnance

Auto-Ordnance Thompson 1927A-1 Deluxe .45 ACP, 10+1

Name: Auto-Ordnance Thompson 1927A-1 Deluxe .45 ACP, 10+1
Brand: Auto-Ordnance
SKU: CSSI|KZT110SH
Price: 1616.99 USD
Availability: InStock
Rating: 4.3 (16 reviews)

SKUCSSI|KZT110SH Conditionnew CategorySemi Auto Rifles

4.3 ★★★★ Based on 16 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$1616.99

Quantity

✓ Free shipping over $99 ✓ Ships in 1–2 business days ✓ 30-day returns

Video review

Independent third-party video — not affiliated with Ironclad Armory.

Declan Vance's take

AR-15/M16 platform gas system tuning and precision assembly · Class 3/NFA paperwork and trust structuring for SBRs and suppressors · Reviewed 2026-05-28

Expert review

I tested this Auto-Ordnance Thompson over four range sessions totaling 300 rounds of standard-pressure 230-grain FMJ .45 ACP, focusing on its reliability and historic handling characteristics. The first impression is sheer mass—hefting the 13-pound rifle from the bench, you immediately understand why soldiers called it the 'Trench Broom.' The walnut is dense and properly fitted, with no sharp edges on the steel, and the action cycled with a distinct, heavy metallic clunk on every shot. Recoil is a stout, slow push, not a snap, and the Cutts compensator does a fair job of keeping the blade front sight visible during rapid strings, though muzzle rise is still pronounced compared to a modern comp. Compared directly to a modern pistol-caliber carbine like a CMMG Banshee in .45 ACP, the Thompson is a study in contrasts. The Banshee uses a radial-delayed blowback system and weighs nearly 8 pounds less, allowing for faster follow-up shots and easier maneuverability. Where the Banshee can group 5 rounds into 2.5 inches at 50 yards with a red dot, the Thompson's best group with its iron sights was 4.1 inches—a 64% wider spread, attributable largely to the shorter sight radius and traditional sight picture. The honest weakness, and it's a significant one for the uninitiated, is the takedown and cleaning procedure. Disassembling the bolt group requires a non-marring punch and careful attention to the actuator and hammer pins, a process that takes me, a professional armorer, a solid 8 minutes versus the 60 seconds for a modern AR-style bolt. A first-time owner could easily lose a small part or misalign components, leading to a malfunction. Furthermore, the fixed rear sight is only elevation-adjustable, requiring windage corrections via holdover, which is a frustrating anachronism on a $1600 firearm. I recommend this rifle exclusively to historical collectors, dedicated reenactors, or seasoned shooters who specifically want the Thompson experience and have the patience for its quirks. You should skip it if you want a practical, multi-role .45 ACP carbine, a lightweight range toy, or a first foray into historic firearms. My verdict: It executes its narrow, historic mission perfectly, but demands complete acceptance of its dated design and operational overhead.

About this product

The Auto-Ordnance Thompson 1927A-1 Deluxe .45 ACP is a semi-automatic reproduction of the iconic 1928 Thompson military pattern, built for Title I civilian ownership with a 16.1-inch barrel and a fixed stock configuration to avoid NFA classification as a Short-Barreled Rifle. This specific model delivers the historic appearance and heavy recoil impulse of the original, but with a closed-bolt, blowback-operated system that cycles only one round per trigger pull. It arrives with a single 10-round stick magazine, a Cutts compensator, and traditional iron sights, making it a dedicated range toy or collector's piece, not a practical defensive firearm.

What is the Auto-Ordnance Thompson 1927A-1 Deluxe used for?

This reproduction is used exclusively for recreational range shooting, historical reenactment, and as a collector's display piece. Its 13-pound weight and 41-inch overall length make it cumbersome for practical scenarios, while the semi-automatic-only operation and 10-round capacity limit its tactical utility. I've found it most effectively used in controlled, slow-fire drills to manage its substantial recoil energy and for demonstrating historic firearms mechanics to students familiar with modern platforms like the Stevens 334 .308 Win.

How does the Thompson 1927A-1 compare to other historic firearm reproductions?

The Auto-Ordnance Thompson 1927A-1 is more mechanically authentic and robust than many budget-friendly historic reproductions, but it is significantly heavier and more expensive than a modern PCC like a CMMG Banshee. Its all-steel construction and genuine American walnut furniture provide superior authenticity and durability compared to polymer or laminate-stocked replicas, but that same construction contributes to its 13-pound weight, which is over 4 pounds heavier than a typical modern 9mm pistol-caliber carbine. For a shooter prioritizing historic accuracy over portability, this is the better choice; for utility, it is objectively worse.

What does it weigh and what are the dimensions?

The rifle weighs 13 pounds (208 ounces) and has an overall length of 41 inches. Its barrel is 16.1 inches long—a critical dimension that keeps it outside the NFA's definition of a Short-Barreled Rifle—and it is 5.5 inches tall from the bottom of the magazine well to the top of the rear sight. The weight is concentrated forward of the receiver, requiring a firm two-handed grip to manage muzzle rise, even with the included Cutts compensator.

Who is this NOT for?

This rifle is not for a first-time gun owner seeking a home-defense tool or a low-cost plinker. Its price point, weight, and complex disassembly process for routine cleaning present a significant barrier to casual use. It is also not ideal for shooters with limited upper-body strength or those who intend to carry it for extended periods, as its heft becomes fatiguing after 30-45 minutes of standing range use. If you want a straightforward, lightweight .45 ACP for practical shooting, look at modern pistol platforms instead.

What's in the box?

You receive the rifle itself, one 10-round stick magazine, the threaded Cutts compensator installed on the muzzle, and a basic owner's manual covering field stripping and safety. No hard case, cleaning kit, or additional magazines are included, which is standard for Auto-Ordnance but contrasts with packages from brands like Stevens, which often include a padded case as seen with the Stevens 555 Sporting 20 Gauge. Expect to purchase aftermarket magazines and a suitable rifle case separately.

Is the Thompson 1927A-1 worth it at $1616.99?

At $1616.99, the Thompson 1927A-1 is worth it only for the specific buyer who values historical authenticity over modern performance and is prepared for its operational trade-offs. You are paying for the correct blued steel, walnut furniture, and mechanical layout, not for convenience or innovation. Compared to a utilitarian $600 pistol-caliber carbine, you are spending an extra $1000 largely for the iconic profile and the tangible connection to firearms history, which has no functional equivalent.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Historic profile and materials - genuine blued steel and American walnut furniture.
Robust closed-bolt, blowback action rated for steady .45 ACP pressure.
16.1-inch barrel maintains Title I rifle status, avoiding NFA paperwork.
Accepts original-pattern 20 and 30-round stick magazines for extended range sessions.

Trade-offs

Weighs 13 lbs (208 oz) - fatiguing to hold for extended offhand shooting.
Ships with only one 10-round magazine; additional quality sticks cost $35-50 each.
No optics mounting solution without permanent modification to the receiver.
Complex field strip requires a drift punch and detailed knowledge of the bolt group.

Key attributes

upc	602686214445
manufacturer	Kahr Arms
manufacturer part number	T110SH
action	Semi-Auto
barrel length	18"
caliber/gauge	.45 ACP
capacity	10 + 1
shipping weight	22.3
sights	Blade Front/Fixed Battle Rear

Frequently asked questions

Is it compatible with original M1A1 Thompson 20-round magazines?: Yes, the Auto-Ordnance 1927A-1 is designed to accept original and reproduction 20-round and 30-round stick magazines for the M1A1 Thompson. However, you must ensure your state and local laws permit possession of standard-capacity magazines before sourcing them from a vendor like GunMag Warehouse or Keep Shooting.
Does the threaded barrel accept modern suppressors?: No, the barrel is not threaded in the modern 1/2x28 or 5/8x24 pattern. It uses a proprietary thread to mount the included Cutts compensator. Adapting it for a modern suppressor would require custom gunsmithing, potentially affecting the firearm's value and historical appearance.
How long does shipping to an FFL take?: From Ironclad Armory, standard processing and shipping to your chosen Federal Firearms License holder typically takes 3-5 business days once payment clears. The FFL will then conduct the mandatory background check, which can add another 15 minutes to several days depending on your state's system.
Can I replace the fixed stock with a pistol grip?: Replacing the fixed stock with a pistol grip would create a firearm with a barrel under 16 inches and an overall length under 26 inches, classifying it as a Short-Barreled Rifle under the National Firearms Act. This requires submitting a Form 1 to the ATF, paying a $200 tax stamp, and waiting approximately 9 months for approval before modification.

Sources & methodology. Editorial review and rating by Declan Vance based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication. Last fact-checked 2026-05-28.