Radian Weapons Model 1 Complete Upper Receiver - 14.5" 6MM ARC, Gray Cerakote The Radian Weapons Model 1 Complete Upper is built on a straightforward philosophy: combine the highest-quality raw materials, the most precise CNC machining, and the best components available to create a firearm that seamlessly blends form and function. Chambered in 6mm ARC with a 14.5" pinned barrel (16" overall length) and a 1:7 twist rate, this upper delivers exceptional accuracy backed by a Sub-MOA guarantee when used with Black Hills Match Grade ammunition. The proprietary 14" M-LOK handguard, Dead Air KeyMo Flash Hider, and Radian Raptor-SD suppressor-optimized charging handle make this upper an elite platform for both tactical and precision shooting applications. Every Model 1 is assembled by hand, one at a time, by a trained gunsmith who inspects, test fires, and cleans the weapon to personally guarantee it meets the most rigid quality standards. Backed by Radian&';s lifetime guarantee, no detail has been overlooked. Product Highlights Sub-MOA Accuracy Guarantee: Verified accuracy with Black Hills Match Grade ammunition ensures consistent, precision performance out of the box. Billet 7075-T6 Upper Receiver: CNC-machined from aircraft-grade 7075-T6 aluminum with M4 feed ramps for superior strength and reliability. 14" M-LOK Handguard with Anti-Rotation Pin: Proprietary extended aluminum handguard with Magpul M-LOK mounting system and an integrated stainless steel upper/handguard anti-rotation pin for a rock-solid fit. Radian Raptor-SD Ambidextrous Charging Handle: Suppressor-optimized design reduces gas blowback and provides fully ambidextrous operation for left- and right-handed shooters. Enhanced Black Nitride M16 Bolt Carrier Group: Hardened Black Nitride finish on the M16-profile BCG delivers corrosion resistance and reduced friction for long-lasting, reliable cycling. Specs Brand: Radian Weapons MPN: R0900 UPC: 810098420921 Caliber: 6mm ARC Barrel Length: 14.5" Pinned (16" Overall Length) Twist Rate: 1:7 Thread Pitch: 5/8x24 Muzzle Device: Dead Air KeyMo Flash Hider Gas System: Mid-Length, Direct Impingement Handguard: 14" Proprietary Aluminum M-LOK Upper Receiver Material: Billet 7075-T6 Aluminum Bolt Carrier Group: Enhanced Black Nitride M16 BCG Charging Handle: Radian Raptor-SD Suppressor-Optimized Ambidextrous Finish: Cerakote Gray Forward Assist: Lightweight Assembly: Hand-assembled and inspected by a trained gunsmith Warranty: Lifetime Guarantee Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>