The Radian Weapons Model 1 – 6MM ARC, 18" Barrel, Dead Air Flash Hider, Gray Cerakote, 20-Round Capacity (Model R0857, UPC 810098420839) is a premium, semi-automatic AR-15 built for shooters who demand top-tier accuracy, bombproof reliability, and fully ambidextrous controls. Chambered in 6mm ARC and wearing a sleek gray Cerakote finish, this Model 1 is purpose-built for long-range precision, gas-gun competition, and high-end defensive or duty roles. Impact Guns+4Buds Gun Shop+4GrabAGun+4
Precision 6MM ARC Performance with an 18" Match Barrel
The star of this rifle is its 18" match-grade stainless steel barrel, optimized for the outstanding ballistics of the 6mm ARC cartridge: GrabAGun+2Impact Guns+2
Caliber: 6mm ARC – engineered for flat trajectories, excellent retained energy, and impressive wind performance at distance.
Barrel length: 18" – the sweet spot for balancing velocity, handling, and suppressed performance.
Barrel material: Match-grade stainless steel, threaded and designed for precision gas-gun builds.
Operating system: Direct impingement, tuned for smooth function and consistent cycling. GrabAGun+2Impact Guns+2
With quality ammunition, 6mm ARC turns this Model 1 into a true long-range AR, capable of extended-range engagements on steel, varmints, or predators.
Dead Air Flash Hider – Suppressor-Ready from Day One
On the muzzle, the Radian Model 1 R0857 ships with a Dead Air flash hider installed: mcdermottac.com+3Palmetto State Armory+3GrabAGun+3
Purpose-built to significantly reduce visible muzzle flash.
Acts as the host for Dead Air suppressor mounts (KeyMo-style models where compatible), making it easy to plug into a modern suppressor setup.
Threaded match barrel + pinned Dead Air device give you a ready-to-run suppressor host that looks clean and functions even better.
For shooters already running Dead Air cans or planning to, this rifle is a natural fit.
Fully Ambidextrous Controls – Built for Right- and Left-Handed Shooters
The Model 1 line is famous for being truly ambidextrous, and this 6mm ARC variant is no exception: mcdermottac.com+4Palmetto State Armory+4Buds Gun Shop+4
Ambidextrous safety selector – operate from either side without changing your grip.
Ambidextrous magazine release – fast reloads whether you’re right- or left-handed.
Ambidextrous bolt release / A-DAC-style functionality – lock and release the bolt from multiple positions for faster remedial manipulations. Palmetto State Armory+2miaintarms.com+2
Includes a Radian Raptor-style ambidextrous charging handle on Model 1 rifles, optimized for suppressed use and gloved hands. Impact Guns+1
If you’re tired of “right-hand only” controls, the Model 1’s layout is a breath of fresh air—especially for professional users, instructors, and serious left-handed shooters.
Billet Receivers & Gray Cerakote Finish
Radian builds the Model 1 around billet-machined receivers and a full Cerakote treatment: Arnzen Arms+4Palmetto State Armory+4Buds Gun Shop+4
Upper & lower receiver: Billet 7075-T6 aluminum for superior strength, tight tolerances, and clean lines.
Finish: Gray Cerakote on the receiver set and matching handguard for a modern, low-glare, corrosion-resistant exterior.
Full-length Picatinny top rail – ready for LPVOs, red dots, magnifiers, night vision, or thermal optics. GrabAGun+1
Cerakote not only looks good, it adds a layer of protection against hard use, harsh weather, and rough handling in vehicles or on the range.
Extended M-LOK Handguard – Mission-Ready Modularity
Up front, the Model 1 6mm ARC uses an extended aluminum handguard with Magpul M-LOK slots: GrabAGun+2Impact Guns+2
Slim, free-floated handguard stretches nearly to the muzzle, giving you maximum real estate for support-hand placement and accessories.
M-LOK mounting slots along the length for attaching bipods, barricade stops, vertical grips, sling QD mounts, or white lights.
Integrated top rail mates with the upper receiver rail, providing a continuous mounting surface for optics and backup sights.
Whether you’re building a precision bipod-supported rig or a practical field carbine, the extended M-LOK handguard supports it.
Carbon Fiber Stock & Magpul Furniture
Radian equips this Model 1 configuration with premium furniture aimed at both comfort and performance: mcdermottac.com+3GrabAGun+3Ready Gunner+3
Stock: Lightweight carbon fiber stock on a 6-position mil-spec receiver extension – extremely rigid with minimal added weight.
Pistol grip: Black Magpul grip for a consistent, ergonomic interface and storage compartment.
QD end plate at the rear of the receiver for quick-detach sling mounting, making it easy to set up as a single- or two-point rifle. GrabAGun+1
The combination of carbon fiber stock and Magpul grip helps keep the rifle light, balanced, and comfortable over long days on the gun.
Match-Grade Trigger & Tuned Recoil System
Internally, the Model 1 is designed to shoot like a precision rifle, not a rattly off-the-shelf carbine: GrabAGun+2Impact Guns+2
Match-grade, two-stage style trigger (Model 1 family rifles are shipped with premium match triggers, tuned for crisp, predictable breaks and short reset).
Uses an H2 carbine buffer and tuned recoil system on many 6mm ARC configurations for smooth cycling and reduced perceived recoil. GrabAGun+1
The result is a rifle that lets you call your shots, manage recoil efficiently, and run fast follow-ups at distance.
Hand-Assembled & Test Fired – Radian Quality Philosophy
Radian Weapons emphasizes hand assembly and tight quality control on every Model 1: Buds Gun Shop+1
Each rifle is assembled by hand, one at a time, by a trained gunsmith.
Every unit is test fired and inspected before it leaves the factory.
Radian backs the platform with a lifetime guarantee, reflecting their confidence in materials, machining, and assembly.
This is not a parts-bin build—it’s a premium AR that reflects meticulous attention to detail.
Ideal Use Cases – From Precision Gas Gun to Hard-Use Carbine
The Radian Model 1 6mm ARC, 18" Gray Cerakote (R0857) shines in several roles:
Precision gas gun / long-range AR: 6mm ARC + 18" match barrel + match trigger = serious performance on steel or distance paper. GrabAGun+1
Practical competition rifle: Ambidextrous controls, extended handguard, and soft recoil make it perfect for dynamic stages.
High-end defensive or duty carbine: Fully ambi controls, reliable DI system, and premium components inspire confidence when reliability matters.
Hunting / predator control: Pair with quality 6mm ARC loads for coyotes, hogs, and medium game in states where semi-auto hunting is allowed.
If you’re looking for a single AR-15 that can handle both serious range work and real-world tasks, this Model 1 configuration is hard to beat.
Key Specifications – Radian Model 1 6MM ARC 18" Gray (R0857)
From multiple dealer listings and manufacturer spec summaries: Impact Guns+4Buds Gun Shop+4GrabAGun+4
Manufacturer: Radian Weapons
Model: Model 1
SKU / MPN: R0857
UPC: 810098420839
Platform: AR-15 / AR-style semi-automatic rifle
Caliber: 6mm ARC
Action: Semi-automatic, direct impingement
Barrel Length: 18" match-grade, threaded stainless steel
Barrel Finish: Black Cerakote
Muzzle Device: Dead Air flash hider (KeyMo-style)
Handguard: Extended free-float aluminum handguard with M-LOK slots
Receiver Material: Billet 7075-T6 aluminum
Receiver Finish: Gray Cerakote (upper and lower)
Controls: Fully ambidextrous safety, mag release, bolt catch/hold-open (Model 1 ambi system)
Charging Handle: Ambidextrous Radian Raptor-style (suppressor-optimized on many configurations)
Stock: Carbon fiber stock on 6-position receiver extension
Grip: Black Magpul grip
Capacity: 20+1 rounds (includes 1 x 20-round magazine)
Sights: None – optics-ready, full-length Picatinny top rail
Stock Material: Carbon fiber
Overall Use: Precision, competition, tactical/defensive, and extended-range shooting
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