Product Description The CMMG DISSENT BR4 in Tungsten is a purpose-built tactical carbine chambered in 5.56x45mm NATO, engineered for compliance, reliability, and precision shooting. Built around a 14.5" 4140CM steel barrel with a 1:7 twist and SBN finish, the DISSENT BR4 features a CMMG ZEROED SVD muzzle brake that is permanently pinned and welded, bringing the overall barrel length to 16.1" so no NFA tax stamp is required. The compact action direct impingement operating system runs without a traditional buffer assembly, delivering a balanced and streamlined shooting experience. An adjustable 0.750" mid-length gas block allows shooters to fine-tune the gas system for different ammunition loads or suppressed use. Finished in Cerakote Tungsten, the BR4 combines rugged durability with a commanding look, making it one of the most distinctive modern sporting rifles in its class. Product Highlights 14.5" 4140CM barrel with SBN finish and 1:7 twist, with permanently pinned and welded ZEROED SVD muzzle brake bringing overall barrel length to 16.1" for NFA-compliant use Compact action direct impingement operating system eliminates the traditional buffer assembly for a refined, balanced platform Adjustable 0.750" gas block for precise tuning to preferred ammunition or suppressor configurations DISSENT 7075 T6 aluminum upper receiver and BR4 billet 7075 T6 aluminum lower receiver for a lightweight yet duty-grade build Includes (2) Magpul 10rd PMAGs, ZEROED drop-in single stage trigger, reversible Dissent side charging handle, and Magpul SGA stock Specs Brand: CMMG MPN: CMM55A080BTNG UPC: 840442500139 Platform: BR4 Caliber: 5.56x45mm NATO Operating System: Compact Action Direct Impingement Barrel Length: 14.5" Barrel Twist: 1:7 Barrel Contour: MT Barrel Material: 4140CM, SBN Muzzle Device: CMMG ZEROED SVD Brake Pinned & Welded Muzzle Thread: 1/2 x 28 Gas Port Location: Mid Gas Block: Adjustable 0.750" Upper Receiver: DISSENT 7075 T6 Aluminum Lower Receiver: BR4 Billet 7075 T6 Aluminum Hand Guard: CMMG 15" Proprietary Finish: Cerakote Tungsten Charging Handle: Dissent Side Charger - Reversible Buffer Type: N/A Stock/Brace: Magpul SGA - Remington 870 Trigger Type: ZEROED Drop-In Single Stage Trigger Guard: Integrated Safety Selector: Reversible Cross Bolt Magazine: (2) Magpul 10rd PMAG Weight: 7.7 lbs Overall Length: 36.5" Color: Tungsten 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.