*CONTACT US FOR A SPECIAL COUPON CODE!*
Radian Weapons® Model 1 Complete Premium Upper Receiver Assembly – Fits Standard AR-15 Lowers – .300 AAC Blackout – 9" Ultra-Fast 1:5 Twist Match-Grade Barrel – Dead Air Silencers® KeyMo Flash Hider – Suppressor-Optimized – Black Cerakote Finish – R0027
Product Description
The Radian Weapons® Model 1 Complete Premium Upper Receiver Assembly (R0027) represents the absolute zenith of premium direct-impingement weapon configuration and master-tier design integration, engineered from the ground up in Redmond, Oregon to supply uncompromised sub-MOA accuracy and extreme reliability. Purpose-built as a top-deck solution for discerning shooters assembling a top-tier personal defense weapon (PDW) or compact short-barreled rifle (SBR), this 9-inch powerhouse treats every component as an interlocking system rather than a collection of loose aftermarket parts. While basic factory uppers settle for flexible cast rails that cause systemic zero shift under heavy hand pressure—and standard twist barrels struggle to fully stabilize modern defense payloads—the Model 1 architecture entirely rewrites short-carbine manual of arms. This elite weapon core (817093020859) acts as an indispensable, zero-fail primary asset for close-quarters defensive staging, low-visibility vehicular security operations, and high-volume target validation loops.
The core structural and barrel foundation of this premium 300 Blackout engine is precision CNC billet-machined from a monolithic block of premium 7075-T6 structural aerospace-grade aluminum alloy, shielded with a robust, heat-defying Tactical Black Cerakote ceramic coating. Nested cleanly into the upper receiver frame is an overbuilt 9-inch match-grade 416R stainless steel barrel treated with a protective black nitride armor finish and completed with meticulously polished crown structures and M4 feed ramps. Shifting entirely away from legacy 1:7 or 1:8 barrel profiles that suffer from bullet tumble when firing ultra-heavy projectiles out of a shortened bore, this model features an ultra-fast 1:5" precision right-hand twist rate. This rapid mechanical rotation ensures total rotational stabilization of heavy subsonic hunting and defensive cartridges up to 220 grains, yielding immaculate projectile tracking lines and wiping out the threat of devastating silencer baffle strikes.
The true operational triumph of this American-built masterpiece lies in its proprietary handguard lockup matrix and suppressor-optimized controls. The 8-inch extended aluminum handguard features a full-length top Picatinny rail alongside extensive Magpul® M-LOK tool slots, locked permanently to the upper frame shell via an integrated stainless steel anti-rotation alignment dowel pin that keeps your target lasers and backup iron sights flawlessly trued over extended use. From the factory, the muzzle comes pre-installed with a Dead Air Silencers® KeyMo Flash Hider on standard 5/8"-24 threads, providing an instantaneous, rock-solid fast-attach interface for the Sandman, Nomad, or Sierra suppressor families. Completed by a full-auto rated Radian Enhanced Black Nitride M16 Bolt Carrier Group (BCG) and the highly regarded Radian Raptor-SD™ suppressor-optimized ambidextrous charging handle—which uses specialized ported tracks to redirect high-pressure blowback gases away from the shooter's eyes—this 3.70-pound mechanical marvel supplies absolute control on the firing line.
Includes: (1) Radian Weapons Model 1 Complete Upper Receiver Assembly (Black Cerakote Billet Frame, 9" 1:5 Twist Nitride Stainless Barrel, 8" Proprietary M-LOK Rail System), (1) Pre-Installed Dead Air KeyMo Fast-Attach Flash Hider, (1) Radian Enhanced Black Nitride M16 Bolt Carrier Group, (1) Radian Raptor-SD Suppressor-Optimized Ambidextrous Charging Handle, and Original Factory Retail Distribution Presentation Box.
*Safety/Installation & Regulatory NFA Guidance: The Radian R0027 complete upper receiver pins directly onto standard MIL-SPEC AR-15 lower receiver frameworks. Because this assembly implements a compact 9-inch short barrel footprint, marrying it to a lower receiver natively outfitted with a standard rifle buttstock reclassifies the complete firearm as a Short Barreled Rifle (SBR) under federal regulations, necessitating active National Firearms Act (NFA) registration and an approved ATF Form 1 prior to physical connection. To maintain immediate lawful compliance without NFA paperwork, ensure this upper is paired exclusively with a lower receiver legally configured and documented as a handgun/pistol platform. Always visually and physically verify that your host receiver is clear of ammunition prior to pin alignment.
Key Features
- Ultra-Fast 1:5" Barrel Twist: Specialized 416R stainless steel match bore spins heavy subsonic .300 BLK rounds up to optimal defensive velocities without accuracy degradation or yaw.
- Dead Air KeyMo Quick Attach: Ships from the factory with a premium KeyMo flash hider, establishing a direct, zero-movement mounting station for world-class suppressors.
- Raptor-SD Ported Charging Handle: Suppressor-optimized gas channels vector harsh internal receiver blowback forward and away from the operator's vision during fast-paced strings.
- Anti-Rotation Rail Integration: Handguard and billet receiver shell align via an unyielding stainless steel pinning lock, ensuring weapon lights and targeting lasers never wander off-zero.
- Enhanced Nitride M16 Bolt Group: Overbuilt full-auto rated carrier core undergoes a deep liquid-nitride processing sweep to produce a slick, self-lubricating surface that rejects heavy carbon caking.
- Billet 7075-T6 Cerakote Shell: Machined from solid aerospace billet stock and coated in rich black Cerakote to insulate critical components from impact shear and environmental corrosion.
Product Specifications
- Brand: Radian Weapons® (Redmond, Oregon, USA)
- Product Line: Model 1 Premium Complete Upper Receiver System Matrix
- Model Series Designation: Radian Model 1 9" .300 Blackout Complete Upper Receiver
- SKU / MPN: R0027 (Alternative Industry Identifiers: RWR0027 / RAD-R0027 / 126514)
- Lower Receiver Interface: Standard Mil-Spec AR-15 Lower Layout Configuration
- Caliber Class Chambering: .300 AAC Blackout (7.62x35mm / 300 BLK)
- Operating System Layout: Direct Impingement (DI) Performance Pipeline
- Gas System Length: Pistol-Length Gas Tube Architecture
- Gas Block System Profile: .750" Micro Low-Profile Fixed Gas Block Component
- Barrel Length Specification: 9.00 Inches (228.60 mm) Performance Match Core
- Barrel Material Matrix: Precision Match-Grade 416R Stainless Steel Structural Base
- Barrel Surface Protective Layer: Wear-Resistant Friction-Reducing Black Nitride Armor
- Rifling Twist Rate Parameter: 1:5" Right-Hand Precision Twist (Subsonic Heavy-Bullet Optimized)
- Muzzle Thread Pattern: 5/8"-24 TPI (Threads Per Inch) Standard Heavy Bore Footprint
- Pre-Installed Muzzle Device: Dead Air Silencers® KeyMo Flash Hider Mount (Pin-and-Weld Adaptable)
- Handguard Assembly Class: 8.0-Inch Proprietary Extended Aluminum M-LOK Modular Rail Shield
- Handguard Lockup System: Integrated Stainless Steel Anti-Rotation Dowel Pin Alignment Frame
- Upper Receiver Shell Construction: CNC Billet-Machined 7075-T6 Aircraft Structural Aluminum
- External Protective Finish: Premium Multi-Layer High-Durability Tactical Black Cerakote Ceramic
- Bolt Carrier Group Core: Radian Enhanced Black Nitride M16 Full-Auto Rated Assembly
- Charging Handle Interface: Radian Raptor-SD™ Suppressor-Optimized Ambidextrous Handle
- Product Net Component Weight: ~3.70 lbs (~59.20 oz) - Ultra-Agile Compact Upper Deck
- Total Packaging Shipping Mass: ~5.50 lbs (Enclosed Inside Heavy Padded Retail Presentation Box)
- UPC Barcode: 817093020859
