The Radian Weapons Model 1 – 6mm ARC, 18" Barrel, Dead Air Flash Hider, Brown Cerakote (R0856, UPC 810098420822) is a premium, hand-built AR-15–pattern rifle designed for shooters who demand true long-range performance from a compact semi-automatic platform. Chambered in 6mm ARC and packed with boutique components like a match-grade 18" barrel, fully ambidextrous controls, and a Dead Air flash hider, this Model 1 is purpose-built for precision, hunting, and serious range work. KYGUNCO+3radianweapons.com+3Palmetto State Armory+3
Engineered for 6mm ARC – Flat Trajectories & Serious Range
Radian’s 6mm ARC Model 1 was created to squeeze maximum performance out of the AR-15 footprint. The 6mm ARC cartridge delivers flatter trajectories, excellent ballistic efficiency, and extended effective range compared to traditional 5.56 NATO, making it ideal for coyotes, hogs, steel, and practical long-range shooting. radianweapons.com+1
Caliber: 6mm ARC
Intended roles: Predator and varmint hunting, practical precision matches, and long-range training
Use case examples: Clearning coyotes at 400 yards, ringing steel at 800, or refining your dope at distance—all tasks the 6mm ARC Model 1 was explicitly built around. radianweapons.com+1
If you’ve been looking for a factory AR-15 that truly takes advantage of modern high-BC 6mm projectiles, the R0856 Model 1 is built exactly for that mission.
Match-Grade 18" Barrel & Dead Air Flash Hider
At the heart of this rifle is a match-grade 18" 416R stainless steel barrel with Radian’s new weight-reducing flutes, purpose-built for 6mm ARC. radianweapons.com
Barrel length: 18" – an ideal balance of velocity and handling for 6mm ARC
Material: 416R stainless steel, chosen for its consistency and accuracy potential radianweapons.com+1
Profile: Fluted to reduce weight and aid cooling while maintaining rigidity
Gas system: Rifle-length gas on the 18" 6mm ARC configuration for a smooth recoil impulse and reliable function radianweapons.com
Muzzle device: Dead Air flash hider, compatible with Dead Air suppressor systems and designed to reduce muzzle flash and help control recoil radianweapons.com+2Palmetto State Armory+2
The barrel is threaded and suppressor-ready, and combined with the Dead Air flash hider, gives you an out-of-the-box solution that’s optimized for modern suppressor setups and low-signature shooting.
Radian also guarantees sub-MOA accuracy with quality match ammunition, reflecting the premium barrel, gas system tuning, and overall build quality. Palmetto State Armory+1
Fully Ambidextrous, Billet 7075-T6 Receivers
One of the defining features of the Model 1 line is its truly fully ambidextrous control layout, built on high-end billet receivers. radianweapons.com+2Palmetto State Armory+2
Upper receiver: Billet-machined 7075-T6 with M4 feed ramps for reliable feeding and long-term durability. radianweapons.com+1
Lower receiver: Billet 7075-T6 lower with an integral trigger guard and flared magwell for faster, more consistent reloads. radianweapons.com+1
Ambidextrous controls:
A-DAC™ ambidextrous dual-action control with right-side bolt hold-open functionality
Ambi magazine and bolt release controls
Radian Talon™ modular ambidextrous safety, configurable for 45° or 90° throw to match shooter preference radianweapons.com+1
Whether you’re left-handed, right-handed, or frequently switch shoulders around barricades, the Model 1’s ambi layout keeps the rifle intuitive and efficient from any position.
Radian Vertex Trigger & Raptor-SD Charging Handle
Radian doesn’t cut corners on the fire-control and manipulation pieces that matter most to serious shooters.
Trigger: Radian Vertex™ match trigger – a crisp, consistent trigger engineered to enhance precision with a clean break and short reset. radianweapons.com+1
Charging handle: Radian Raptor-SD™ suppressor-optimized ambidextrous charging handle, designed to vent gas away from the shooter and provide easy access from either side of the rifle. radianweapons.com+1
Together, these components create an interface that feels tuned for precision work—whether you’re breaking slow, deliberate shots at distance or running fast drills at closer ranges.
Extended M-LOK Handguard & Premium Components
The R0856 Model 1 is built around a proprietary, extended handguard and high-end internal components:
Handguard: Proprietary extended aluminum handguard with Magpul M-LOK® slots for flexible mounting of bipods, lights, grips, and barricade stops. radianweapons.com+2Palmetto State Armory+2
Anti-rotation pin: Integrated stainless steel anti-rotation pin locks the relationship between the upper receiver and handguard, keeping your rail and optics rock-solid. radianweapons.com+1
Bolt carrier group: Enhanced black nitride M16 BCG for durability, smooth operation, and easy cleaning. radianweapons.com
Gas system: Direct impingement, tuned for reliability and smooth recoil with 6mm ARC and the rifle-length gas on the 18" barrel. radianweapons.com+1
This combination of parts and engineering gives you a rifle that feels extremely refined from the first shot.
Brown Cerakote Finish, Magpul Furniture & 20-Round Steel Magazine
Visually, the R0856 stands out with its brown Cerakote finish and updated Magpul furniture, all color-matched for a cohesive, premium look. Impact Guns+2radianweapons.com+2
Finish: Upper, lower, and handguard are Cerakoted together to ensure a perfect color match and improved corrosion resistance. radianweapons.com+1
Furniture: Updated Magpul grip and stock for improved ergonomics and a secure, modern feel in the shoulder. radianweapons.com+1
Magazine: Ships with a 20-round steel 6mm ARC magazine, giving you a 20+1 configuration out of the box. radianweapons.com+2Palmetto State Armory+2
The brown Cerakote (often referred to as Radian Brown) blends form and function—adding durability while complementing modern optics and accessories in FDE, black, and earth tones.
Hand-Built in the USA & Guaranteed for Life
Every Radian Model 1—including this 6mm ARC R0856 configuration—is assembled by hand in the USA by a trained gunsmith. radianweapons.com+2KYGUNCO+2
Each rifle is individually inspected, test-fired, and cleaned before leaving the factory.
Radian backs the Model 1 with a lifetime guarantee, underscoring their confidence in the platform’s durability and performance. radianweapons.com+2KYGUNCO+2
If you want a factory AR that feels more like a custom shop build, the Model 1 is built exactly with that philosophy in mind.
Who the Radian Model 1 6mm ARC (R0856) Is For
This rifle is an outstanding choice for:
Precision-minded AR shooters who want a top-tier 6mm ARC setup with sub-MOA capability
Predator and varmint hunters seeking flatter-shooting ballistics than 5.56 while staying in the AR-15 footprint
Practical long-range enthusiasts who want a semi-auto capable of engaging steel at 600–800 yards and beyond with modern optics
Left- and right-handed shooters who value fully ambidextrous controls for dynamic shooting and positional work
If you’re building a serious 6mm ARC rig and prefer a ready-to-run, hand-built rifle instead of a ground-up custom project, the Radian Weapons Model 1 R0856 belongs at the very top of your list.
Key Specifications – Radian Weapons Model 1 6mm ARC, 18" Brown (R0856)
From Radian and leading dealers: reconarms.com+4radianweapons.com+4Palmetto State Armory+4
Manufacturer: Radian Weapons
Model: Model 1
SKU / MPN: R0856
UPC: 810098420822
Platform: AR-15, semi-automatic
Caliber: 6mm ARC
Barrel: 18" match-grade 416R stainless, fluted, threaded, rifle-length gas
Muzzle Device: Dead Air flash hider (KeyMo-compatible), suppressor-ready
Receivers: Billet 7075-T6 upper & lower, fully ambidextrous controls
Handguard: Extended aluminum free-float with Magpul M-LOK slots & stainless anti-rotation pin
Trigger: Radian Vertex match trigger
Charging Handle: Radian Raptor-SD ambidextrous charging handle
Safety: Radian Talon ambidextrous 45°/90° selector
Magazine: 1× 20-round steel 6mm ARC magazine (20+1 capacity)
Finish: Brown Cerakote on upper, lower, and handguard
Country of Manufacture: USA
Warranty: Lifetime, backed by Radian Weapons
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