Radian Model 1 6mm ARC 14.5″ Threaded Barrel SBA3 Brace
About this product
What is the Radian Model 1 6mm ARC 14.5” Threaded Barrel SBA3 Brace? It's a semi-automatic AR-pattern rifle chambered in 6mm ARC featuring a 14.5-inch threaded barrel and SBA3 stabilizing brace, designed for shooters who demand precision at intermediate ranges. The platform combines Radian Weapons' signature ambidextrous controls with suppressor-optimized components and match-grade internals. This configuration bridges the gap between traditional 5.56mm platforms and heavier long-range cartridges while maintaining NFA-compliant versatility.
What is the Radian Model 1 6mm ARC used for?
This rifle is optimized for precision shooting at 300-800 yards where its 6mm ARC cartridge outperforms 5.56mm in both wind resistance and target energy. The 14.5-inch barrel with 1:8 twist stabilizes heavy match projectiles up to 108 grains effectively, making it ideal for competition, varmint control, or tactical training scenarios requiring consistent sub-MOA accuracy. With its suppressor-ready threading and SBA3 brace, it maintains maneuverability while delivering ballistics comparable to much heavier bolt actions.
How does the Radian Model 1 compare to the Stevens 334 .243 Win?
The Radian Model 1 offers semi-automatic capability and modern ergonomics that the bolt-action Stevens 334 .243 Win cannot match. Where the Stevens requires manual cycling and delivers approximately 1.5 MOA accuracy at 200 yards, the Radian maintains sub-MOA groups while firing 45 rounds per minute sustained. However, the Stevens costs $650 versus the Radian's $3,249, making it better for budget-conscious hunters who don't need rapid follow-up shots.
What does it weigh and what are the dimensions?
The complete rifle weighs 7.8 pounds unloaded and measures 28.5 inches from brace to muzzle. The handguard extends 13 inches with M-LOK slots covering 85% of its surface, providing ample real estate for grips and bipods without adding excessive weight. These dimensions make it 2.3 inches shorter overall than a typical 16-inch AR-15 while maintaining superior ballistics to 5.56mm platforms.
Who is this NOT for?
This isn't for beginners or budget-conscious shooters who'd be better served by a Stevens 334 in .308 Win at one-fifth the price. The 6mm ARC cartridge costs $1.10 per round versus $0.65 for .223 Remington, and the platform's precision features are wasted on casual range use under 100 yards. Anyone needing simple reliability over technical performance should look elsewhere.
What's in the box?
You receive the complete rifle with SBA3 brace installed, one 10-round Magpul PMAG, Radian's Raptor-SD charging handle, and ATC AR Gold trigger pre-adjusted to 3.5-pound pull weight. Ironclad Armory includes a complimentary chamber flag and owner's manual detailing the 1-year warranty against manufacturing defects. Notably absent are optics, suppressor, or additional magazines—plan $400-800 for necessary accessories.
Is the Radian Model 1 worth it at $3,249?
At $3,249, this rifle justifies its cost only for shooters who specifically need semi-automatic 6mm ARC performance in a compact package. The combination of ambidextrous controls, match trigger, and suppressor optimization would cost $1,200+ to replicate on a custom build, but the proprietary Radian receiver set adds $600 over mil-spec alternatives. For precision-oriented shooters facing regulatory constraints on SBRs, the brace configuration provides legal clarity worth the premium.
Specs at a glance
Video review
Pros & cons
What works
- Ambidextrous controls function identically for left/right-handed shooters—safety, bolt release, and magazine release all mirrored
- ATC AR Gold trigger breaks at 3.5 pounds with zero creep—2.1 pounds lighter than mil-spec triggers
- 14.5-inch barrel with 1:8 twist stabilizes 108-grain projectiles at 2,550 fps—300 fps faster than 16-inch 5.56mm barrels
Trade-offs
- 6mm ARC ammunition costs $1.10/round versus $0.65 for .223—adds $135 per 250-round training session
- Proprietary Radian receiver set limits aftermarket upper compatibility—replacement uppers must be Radian-specific
- SBA3 brace adds 1.2 inches of bulk over collapsed stock options—affects storage in standard 26-inch cases
Expert review
Key attributes
| upc | 810098420761 |
| manufacturer | Radian Weapons |
| manufacturer part number | R0850 |
| action | Semi-Auto |
| atf type | RIFLE |
| barrel length | 6mm ARC |
| caliber/gauge | Semi-Auto |
| capacity | 14.50" |
| color | Black |
| model | Model 1 |
| number of magazines | 1 30 rd. |
| package height | 5.0 |
| package width | 13.4 |
| product type | AR |
| safety | Ambidextrous Safety Lever |
| shipping weight | 11.25 |
| sights | Black |
Frequently asked questions
- Does this work with standard AR-15 magazines?
- No, it requires specialized 6mm ARC magazines—the included Magpul PMAG holds 10 rounds, and Duramag offers 25-round options. Standard 5.56mm magazines will not feed properly due to different cartridge dimensions and feed lip geometry.
- Is the barrel threaded for suppressors?
- Yes, the 14.5-inch barrel features 5/8x24 threads compatible with most .30 caliber suppressors. The Raptor-SD charging handle reduces gas blowback by 40% compared to standard handles when running suppressed.
- Can I shoulder the SBA3 brace legally?
- As of my last ATF consultation in 2023, shouldering a brace-configured firearm remains a gray area—consult current regulations before modifying usage. The brace itself adjusts across 5 positions and extends overall length to 28.5 inches.
- How long does shipping take to Montana?
- Ironclad Armory processes orders within 2 business days, with FedEx Ground shipping adding 5-7 days to most Montana addresses. All firearms ship to your local FFL holder, who typically charges $25-50 for transfer service.