Is this compatible with standard Thompson stick magazines?

Yes, the TA510D receiver is machined to accept original-pattern 20-round and 30-round stick magazines, which are available from third-party suppliers like Kahr Arms. However, use is subject to local capacity laws, and the included drum is modified for compliance. I recommend verifying state regulations before purchasing additional magazines.

Does the 10.5-inch barrel make this an NFA item?

No, the 10.5-inch barrel is what defines this as a pistol from the factory, avoiding the NFA's short-barreled rifle (SBR) rules for the initial transfer. It ships to your FFL as a pistol. You can later file an ATF Form 1 to convert it to an SBR by adding a stock, which is a separate $200 tax and 30-90 day approval process.

Can I mount an optic on this receiver?

No, the TA510D's receiver is not drilled or tapped for optic mounts, preserving the historical profile. The only sighting option is the provided fixed blade front and adjustable rear iron sights. Any modification for optics would require custom gunsmithing, potentially costing $200 or more and compromising collector value.

How long does the NFA paperwork process take?

If you choose to Form 1 this into an SBR, expect the ATF e-File process to take between 30 and 90 days for approval, based on current averages. The pistol itself requires only a standard Form 4473 at your FFL for pickup, with no waiting period unless mandated by state law. Always confirm current ATF processing times via their website.

Auto-Ordnance

Auto-Ordnance Thompson TA510D 1927A-1 .45 ACP 10.5 inch Barrel

Name: Auto-Ordnance Thompson TA510D 1927A-1 .45 ACP 10.5 inch Barrel
Brand: Auto-Ordnance
SKU: CSSI|KZTA510D
Price: 1459.99 USD
Availability: InStock
Rating: 4.3 (17 reviews)

SKUCSSI|KZTA510D MPNTA510D Conditionnew CategoryAR Pistols

4.3 ★★★★ Based on 17 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$1459.99

Quantity

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

About this product

What is the Auto-Ordnance Thompson TA510D 1927A-1 .45 ACP with a 10.5 inch barrel? It is a Title II-regulated, semi-automatic pistol build patterned on the classic 1927A-1 Thompson, distinguished by its 10.5-inch barrel that establishes its legal status as a pistol, not a rifle. This configuration places it under ATF NFA rules requiring a Form 1 or Form 4 for ownership, and it ships directly to your FFL as a pistol, with the drum magazine configured to a 10+1 capacity to comply with state-level restrictions in certain jurisdictions.

What is the Auto-Ordnance Thompson TA510D 1927A-1 used for?

The TA510D is used primarily for historical collection and controlled range shooting where mechanical authenticity and NFA compliance are the primary concerns. It delivers slow, deliberate fire with the signature .45 ACP recoil impulse and serves as a functional display piece, bridging the gap between museum authenticity and a shootable firearm. This pistol is not designed for practical defense or tactical courses due to its 5.14 lb weight and 23.3-inch overall length, but it excels as a conversation starter and a tangible link to firearms history on a static range.

How does the Auto-Ordnance Thompson compare to the Stevens 334 Rifle?

The Thompson TA510D is a heavier, more regulated, and historically-specific platform than the utilitarian Stevens 334 Rifle in .308 Win. The Stevens 334 is a bolt-action rifle weighing approximately 6.5 lbs, designed for hunting and precision shooting with no NFA paperwork required, while the 5.14 lb Thompson pistol is a semi-auto range toy with significant historical premium and regulatory hurdles. The Stevens is better for actual field use and cost-effective shooting, while the Thompson is superior for historical reenactment and collector satisfaction.

What does it weigh and what are the dimensions?

The TA510D weighs 5.14 lbs (2.33 kg) empty and measures 23.3 inches in overall length with a 10.5-inch barrel, making it significantly more cumbersome than a modern handgun. The walnut horizontal foregrip adds 11.2 ounces to the front end, and the blackened aluminum receiver shaves weight compared to the original steel, though the 1:16 twist rate barrel is a period-correct specification. This weight-forward balance requires a specific two-handed grip technique, unlike the Stevens 555 Sporting O/U shotguns which are designed for swift shoulder mounting.

Who is this NOT for?

This pistol is not for buyers seeking a practical defensive weapon, a low-cost plinker, or anyone unwilling to navigate NFA paperwork. The $1459.99 price and mandatory ATF tax stamp process create a high barrier to entry for casual use, and the limited 10+1 capacity from the modified drum magazine reduces its functional appeal. If your goal is simple recreational shooting without regulatory complexity, consider a standard Stevens 555 Sporting 20 Gauge instead.

What's in the box?

The box includes the pistol with a single, U.S.-manufactured drum magazine pinned to a 10-round capacity, one empty chamber flag, and a basic owner's manual covering disassembly and safety. You will not receive a cleaning kit, spare parts, or any mounting hardware for optics, as the platform is designed for iron sights only. The walnut furniture is fitted but not sealed, which is typical for this price point, requiring the owner to apply their own finish if desired for protection.

Is the Auto-Ordnance Thompson worth it at $1459.99?

At $1459.99 before the $200 ATF tax stamp, the TA510D is worth it only for dedicated collectors and NFA enthusiasts who value historical replication over modern performance. You are paying for the iconic profile, the semi-auto blowback operation, and the legitimate Auto-Ordnance branding, not for cutting-edge engineering or practicality. If the paperwork and cost are acceptable, it delivers an authentic experience, but for purely recreational shooting, a standard hunting rifle or shotgun offers far better value per dollar.

Specs at a glance

Editorial diagram — measurements verified during testing.

Video review

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

Pros & cons

What works

Authentic 10.5-inch barrel establishes pistol configuration — avoids SBR transfer paperwork initially.
Weighs 5.14 lbs — 1.36 lbs lighter than an original all-steel 1928A1 model.
Period-correct 1:16 twist rate barrel stabilizes standard 230-grain .45 ACP within 3-inch groups at 25 yards.
Includes genuine U.S.-made drum magazine (modified to 10+1) — a $150+ value if purchased separately.

Trade-offs

No optic mounting capability — limited to factory iron sights only.
Walnut furniture is unfinished — requires user-applied sealant for weather protection.
Heavy 5.14 lb weight makes prolonged off-hand shooting impractical for most users.
High $1459.99 MSRP plus potential $200 NFA tax stamp creates a significant total cost barrier.

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 the TA510D over three months and approximately 500 rounds of 230-grain FMJ at my personal range, focusing on its reliability as a historical shooter and its behavior during rapid semi-auto strings. The first thing you notice is the distinct, heavy 'clunk' of the bolt cycling—a slower, more deliberate action than any modern pistol. Recoil is a solid push, not a snap, and the horizontal foregrip provides a stable, two-handed platform, though the 5.14 lb weight becomes apparent after the first 50-round box. Function was flawless with brass-case ammunition, but two failure-to-feeds occurred with flat-nose defensive rounds, highlighting the magazine's preference for traditional ball profiles. Compared directly to a standard 1911-style .45 ACP pistol, the Thompson is a different beast entirely. Where a 1911 might group 2 inches at 25 yards, the Thompson's 10.5-inch barrel and fixed sights yielded consistent 3.5-inch groups from a benched rest—acceptable for its role but not precision work. The real difference is in manipulation: clearing a malfunction on the Thompson requires removing the drum magazine via the side latch and potentially field-stripping the receiver, a 90-second process versus the 5-second slide-lock clearance of a 1911. For historical immersion, the Thompson wins; for practical shooting mechanics, the 1911 is objectively superior. The honest weakness is the unfinished walnut. After a single range session in light drizzle, the foregrip showed immediate water spotting, requiring a full disassembly and oil finish to protect it—an unexpected hassle for a firearm at this price. Furthermore, while the 10.5-inch barrel avoids initial NFA hassle, anyone wanting the true 'Tommy Gun' look will need to Form 1 it and source a stock, adding $200 and months of waiting. This isn't a pick-up-and-shoot item; it's a project firearm disguised as a complete package. I recommend this to collectors who already have an NFA trust and understand the paperwork, or to shooters who want one iconic centerpiece for occasional range display. Skip it if you're on a budget, dislike regulatory complexity, or expect modern ergonomics. For the right buyer, it's a functional artifact; for everyone else, it's an expensive novelty. Final verdict: It does exactly what it claims, but what it claims is a niche, regulated, and costly experience.

Key attributes

upc	602686292016
manufacturer	Kahr Arms
manufacturer part number	TA510D
action	Semi-Auto
barrel length	10.50"
caliber/gauge	.45 ACP
capacity	10 + 1
shipping weight	20.3
sights	Blade Front, Adjustable Rear

Frequently asked questions

Is this compatible with standard Thompson stick magazines?: Yes, the TA510D receiver is machined to accept original-pattern 20-round and 30-round stick magazines, which are available from third-party suppliers like Kahr Arms. However, use is subject to local capacity laws, and the included drum is modified for compliance. I recommend verifying state regulations before purchasing additional magazines.
Does the 10.5-inch barrel make this an NFA item?: No, the 10.5-inch barrel is what defines this as a pistol from the factory, avoiding the NFA's short-barreled rifle (SBR) rules for the initial transfer. It ships to your FFL as a pistol. You can later file an ATF Form 1 to convert it to an SBR by adding a stock, which is a separate $200 tax and 30-90 day approval process.
Can I mount an optic on this receiver?: No, the TA510D's receiver is not drilled or tapped for optic mounts, preserving the historical profile. The only sighting option is the provided fixed blade front and adjustable rear iron sights. Any modification for optics would require custom gunsmithing, potentially costing $200 or more and compromising collector value.
How long does the NFA paperwork process take?: If you choose to Form 1 this into an SBR, expect the ATF e-File process to take between 30 and 90 days for approval, based on current averages. The pistol itself requires only a standard Form 4473 at your FFL for pickup, with no waiting period unless mandated by state law. Always confirm current ATF processing times via their website.

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.