Limited Edition Rostic Arms RA-15 – 6MM ARC
Purpose-built for shooters who want reach, accuracy, and real-world performance in a modern AR platform, the Limited Edition RA-15 in 6MM ARC is where capability meets craftsmanship.
This isn’t a mass-produced rifle. Every RA-15 is built to order, tuned for performance, and configured for shooters who demand more than “good enough.”
At the heart of this build is an 18" 6MM ARC barrel, delivering the flat trajectory, energy retention, and extended-range capability that made this cartridge explode in popularity. Whether you’re stretching distance at the range, hunting, or building a precision-leaning general-purpose rifle, this setup hits the sweet spot between mobility and performance.
Performance Features
Velocity 3.5 lb Trigger
Crisp break. Fast reset. Designed to help you take full advantage of the 6MM ARC’s precision potential.
Full M-LOK Handguard
Lightweight, rigid, and ready for accessories. Mount what you need without unnecessary bulk.
Magpul Furniture
Proven ergonomics and durability from one of the most trusted names in the industry.
18" 6MM ARC Barrel
Optimized for accuracy, consistency, and effective performance at distance.
15-Round Magazine Included (1)
Purpose-built feeding reliability for the ARC platform.
Built the Rostic Arms Way
This rifle carries everything customers expect from Rostic Arms:
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Tight fit and finish
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Quality component selection
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Functional, no-nonsense configurations
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Performance-focused builds—not gimmicks
Each rifle is fully customizable to your needs. Want to tweak furniture, optics setup, controls, or configuration? We’ll build it your way.
Build & Delivery
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Built to order
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Lead time: 5–12 business days
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Quality-checked before it leaves the shop
Why 6MM ARC?
Because it bridges the gap.
More range and ballistic efficiency than 5.56.
Less recoil and weight burden than .308 platforms.
Serious performance in a familiar AR footprint.
If you’ve been looking for a rifle that can do more without getting heavier, bulkier, or harder to run—this is it.
Limited edition. Built for performance. Built for shooters who expect more.
