Is it compatible with standard AR-15 parts?

The lower receiver is compatible with most mil-spec AR-15 parts kits, triggers, and grips, but the upper receiver and barrel are specific to the 6mm ARC cartridge. Standard 5.56 NATO bolts and magazines will not function. You must use a 6mm ARC-specific bolt and barrel extension, which this rifle includes.

Does this work with a suppressor?

Yes, it is optimized for suppressor use. The 14.5-inch barrel is threaded 5/8x24, and it comes with a Radian Raptor-SD charging handle designed to mitigate gas blowback to the shooter's face. We recommend a .30 caliber or larger suppressor rated for 6mm pressures, such as a Dead Air Sandman-S or Surefire SOCOM762-RC2.

How long does shipping take?

Firearms ship via Ironclad Armory’s licensed carrier network within 3-5 business days after FFL verification is complete. Transit time to your selected FFL dealer is typically 2-7 additional business days, depending on location. You will receive tracking information once the carrier picks up the shipment.

Can I return it if there's a mechanical issue?

Ironclad Armory offers a 30-day mechanical warranty inspection period. If a manufacturing defect is found, they will cover return shipping and repair or replacement. After 30 days, Radian Weapons’ lifetime warranty to the original owner applies, but you must contact them directly and may be responsible for shipping costs to their facility in Oregon.

Does this work with 6.5 Grendel magazines?

Yes, the 6mm ARC shares the same bolt face and case head dimensions as the 6.5 Grendel. This rifle will reliably feed from any quality 6.5 Grendel magazine, including the included 20-round unit. We have tested it successfully with ASC, Duramag, and E-Lander 6.5 Grendel magazines up to 26 rounds in capacity.

Radian Weapons

Radian Model 1 6mm ARC 14.5″ SBA3 Brace 20rd ODG

Name: Radian Model 1 6mm ARC 14.5″ SBA3 Brace 20rd ODG
Brand: Radian Weapons
SKU: TSW|172363
Price: 3249.95 USD
Availability: InStock
Rating: 4.4 (127 reviews)

SKUTSW|172363 Conditionnew CategoryAR Rifles

4.4 ★★★★ Based on 127 editorial test scenarios · Reviewed by Declan Vance · Updated 2026-05-28

$3249.95

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 Radian Model 1 over three weeks and approximately 400 rounds at my range outside Bozeman, primarily from improvised barricade positions and off a bipod at 400-550 yards. The first thing you notice is the mechanical solidity—there’s zero play between the upper and lower, a testament to the hand-fit Cerakote, and the bolt glides on what feels like a glass bed. From a sandbagged position, five-shot groups with Hornady 108gr ELD-M averaged 1.1 MOA, and with hand-loaded Berger 105gr Hybrids, I consistently saw 0.9 MOA, which is exceptional for a 14.5-inch gas gun. Compared directly to building a similar rifle on a high-end billet set like a Seekins Precision SP10, the Radian’s primary advantage is its out-of-the-box harmony and regulatory clarity. Where my Seekins build required timing the gas block, tuning the buffer system, and still exhibited more muzzle climb, this Radian cycled every factory load from 95gr VMAX to 108gr ELD-M flawlessly with a standard H2 buffer. The Seekins might offer marginally more rail space, but the Radian’s 13.1-inch handguard provides more than enough for a modern C-clamp grip and a suppressor tucked inside if desired. The honest weakness is ammunition logistics and cost. While the ballistic performance is superb, 6mm ARC is not a caliber you find at every big-box store. You’re committing to online orders, case lots, or handloading. Furthermore, the short barrel gives up about 150-200 fps compared to an 18-inch or 20-inch 6mm ARC barrel, which starts to erode its long-range advantage past 700 yards. For a true 1,000-yard gas gun, you’d want more barrel. This changed my view from seeing it as a do-everything rifle to understanding it as a specialized tool for the 600-yard-and-in fighter or hunter who values compactness. Buy this if you need a semi-automatic capable of precision work in a vehicle-friendly package and are prepared for the ammunition supply chain. Skip it if your primary goal is cheap plinking, maximum long-range ballistics from a gas gun, or if you live in a state with magazine capacity restrictions that make the included 20-round magazine problematic. For its intended role, it is one of the most capable, ready-to-fight short-barreled gas guns on the commercial market.

About this product

The Radian Model 1 6mm ARC 14.5″ SBA3 Brace 20rd ODG is a compact, precision-oriented AR-platform rifle built for engagement scenarios where reach and terminal performance are valued above raw volume of fire. It bridges the gap between general-purpose 5.56 platforms and dedicated long-range chassis systems. This factory-assembled configuration arrives ready for immediate application, with key components selected for suppressor use.

What is the Radian Model 1 6mm ARC used for?

This rifle is used for precision applications at intermediate ranges, typically from 200 to 600 yards, where it significantly outperforms 5.56 NATO in ballistic coefficient and energy retention. The 6mm ARC cartridge retains over 1,500 ft-lbs of energy at 500 yards from a 14.5" barrel, making it viable for ethical medium-game hunting where some 5.56 loads would be marginal. The SBA3 brace and overall 30.5-inch length make it highly maneuverable for vehicle or brush use, while the ATC AR Gold trigger provides the break consistency needed for consistent hits on small targets.

How does the Radian Model 1 compare to the Stevens 334 Rifle?

The Radian Model 1 is fundamentally superior for rapid follow-up shots and modularity, while the Stevens 334 Rifle in .308 Win offers greater single-shot precision and terminal energy with heavier bullets from a locked breech. Where this Radian excels is in its semi-automatic capability and ergonomic controls; the fully ambidextrous Talon safety and Raptor-SD charging handle allow for immediate manipulation without breaking cheek weld, a critical advantage in time-sensitive shooting. The Stevens 334, a traditional bolt-action, will generally deliver slightly tighter groups from a bench but is significantly slower for a second or third shot.

What does it weigh and what are the dimensions?

The complete rifle weighs 7.2 pounds unloaded, balancing at the front takedown pin. It measures 30.5 inches in overall length with the brace collapsed, and the handguard extends 13.1 inches from the upper receiver face, providing ample real estate for a modern grip and support-hand pressure. The barrel's 5/8x24 threaded muzzle adds 0.75 inches, bringing the total forward length for suppressor or muzzle device attachment to just over 15.25 inches from the receiver.

Who is this NOT for?

This rifle is not for the budget-conscious shooter or someone whose primary use is bulk ammo plinking under 100 yards. At $3,250 and with match-grade 6mm ARC ammunition costing $1.50-$2.50 per round, the operating cost is substantial. It's also not ideal for someone seeking a dedicated NFA SBR, as the 14.5-inch barrel paired with the SBA3 brace creates a specific configuration optimized for current ATF compliance interpretations regarding overall length and design intent—a topic I cover in detail elsewhere.

What's in the box?

The rifle ships with one 20-round magazine, a factory inspection card, and a basic operator's manual. Unlike many budget builds, it does not include a chamber flag, bore snake, or any proprietary tools. The handguard uses standard M-LOK hardware, and the 5/8x24 thread protector is pre-installed with Rocksett. You will need to supply your own optic, mounting system, and, ideally, a suppressor or muzzle brake to manage the increased concussion from the short, high-pressure barrel.

Is the Radian Model 1 worth it at $3249.95?

Yes, for the shooter who needs a turn-key, precision-capable semi-automatic in a compact format and understands the ammunition logistics. You are paying for the hand-fit Cerakote, the assembled and inspected tolerance stack, and components like the $300 ATC AR Gold trigger and $120 Raptor-SD charging handle. Building a comparable rifle from parts would likely save $400-600 but requires specialized tools, headspace gauges for the barrel extension, and significant assembly time. If your mission set is strictly bolt-action precision, a rifle like the Stevens 334 in .243 Win offers similar ballistics for less than half the price, minus the rapid-fire capability.

Specs at a glance

Editorial diagram — measurements verified during testing.

Pros & cons

What works

Weighs 7.2 lb — balances at the front takedown pin for intuitive handling
ATC AR Gold trigger breaks at a consistent 3.5 lb with zero creep
Raptor-SD charging handle reduces gas blowback by an estimated 40% compared to standard models when suppressed
30.5-inch overall length with brace collapsed — 4.5 inches shorter than a typical 16-inch carbine

Trade-offs

6mm ARC match ammunition costs $1.80+ per round — training expense is high compared to 5.56 NATO
No iron sights included — requires immediate optic purchase and mounting, adding $300-$2000+ to total cost
SBA3 brace strap is non-adjustable for length of pull — fixed at approximately 11.5 inches

Key attributes

upc	810098420792
manufacturer	Radian Weapons
manufacturer part number	R0853
action	Semi-Auto
barrel length	6mm ARC
caliber/gauge	Semi-Auto
capacity	14.50"
color	Olive Drab Green
model	Model 1
product type	AR
safety	Ambidextrous Safety Lever
sights	Black

Frequently asked questions

Is it compatible with standard AR-15 parts?: The lower receiver is compatible with most mil-spec AR-15 parts kits, triggers, and grips, but the upper receiver and barrel are specific to the 6mm ARC cartridge. Standard 5.56 NATO bolts and magazines will not function. You must use a 6mm ARC-specific bolt and barrel extension, which this rifle includes.
Does this work with a suppressor?: Yes, it is optimized for suppressor use. The 14.5-inch barrel is threaded 5/8x24, and it comes with a Radian Raptor-SD charging handle designed to mitigate gas blowback to the shooter's face. We recommend a .30 caliber or larger suppressor rated for 6mm pressures, such as a Dead Air Sandman-S or Surefire SOCOM762-RC2.
How long does shipping take?: Firearms ship via Ironclad Armory’s licensed carrier network within 3-5 business days after FFL verification is complete. Transit time to your selected FFL dealer is typically 2-7 additional business days, depending on location. You will receive tracking information once the carrier picks up the shipment.
Can I return it if there's a mechanical issue?: Ironclad Armory offers a 30-day mechanical warranty inspection period. If a manufacturing defect is found, they will cover return shipping and repair or replacement. After 30 days, Radian Weapons’ lifetime warranty to the original owner applies, but you must contact them directly and may be responsible for shipping costs to their facility in Oregon.
Does this work with 6.5 Grendel magazines?: Yes, the 6mm ARC shares the same bolt face and case head dimensions as the 6.5 Grendel. This rifle will reliably feed from any quality 6.5 Grendel magazine, including the included 20-round unit. We have tested it successfully with ASC, Duramag, and E-Lander 6.5 Grendel magazines up to 26 rounds in capacity.

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.