--- title: "CMMG Dissent Mk4 300 BLK Rifle, Midnight Bronze" description: "Semi-automatic .300 BLK rifle with a 16.1\" threaded barrel, adjustable gas block, side-folding stock, 15\" M-LOK handguard, and two 30rd PMAGs." canonical_url: "https://www.kygunco.com/product/cmmg-55a1a0b-mb-dissent-mk4-5.56mm-16.1-midnight-bronze" meta: author: KYGUNCO "og:description": "Semi-automatic .300 BLK rifle with a 16.1\" threaded barrel, adjustable gas block, side-folding stock, 15\" M-LOK handguard, and two 30rd PMAGs." "og:image": "https://cdn.kygunco.com/assets/products/248263/thumbnail.jpg?v=1710776794" "og:image:height": "500" "og:image:width": "500" "og:title": "CMMG Dissent Mk4 300 BLK Rifle, Midnight Bronze" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Rifles](https://www.kygunco.com/category/shooting/guns/rifles) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/rifles/semi-auto) / CMM-55A1A0B-MB ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/248263/main.jpg?v=1710776794) For illustration purposes only, this image may not be an exact representation of the product. # CMMG Dissent Mk4 300 AAC Blackout 16.1" 30rd Semi-Auto Rifle w/ Threaded Barrel | Midnight Bronze The CMMG Dissent Mk4 is a semi-automatic rifle chambered in .300 AAC Blackout, featuring a 16.1" threaded barrel with a 1:7 twist, adjustable gas block, and Midnight Bronze Cerakote finish. It includes a side-folding stock with adjustable length of pull and cheek riser, a 15" M-LOK handguard, and two 30rd PMAG magazines. $1,924.99 ** 5 interest-free payments of **$385** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) As low as **$182.03**/month with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. ** Check Local Restrictions Not sure whether this item can be shipped to your area? Enter your ZIP code for a quick check. Almost gone. Order now before it sells out. Item # 248263 Style CMM-55A1A0B-MB UPC 810103479975 Condition New Manufacturer [CMMG](https://www.kygunco.com/brand/cmmg) Model Dissent MK4 Hand Right Hand Finish Bronze Round Capacity 30 Caliber 5.56 NATO Action Semi-Auto Barrel Length 16.1 in What do you use 300BLK for? With subsonic and supersonic loadings available for self-defense, hunting, and target shooting, there’s no wrong answer. 300BLK has solidified itself as one of the most user-tailored cartridges out there today. With a 16.1” barrel this DISSENT® feels meant to be in and leaves no performance behind. Available in a variety of custom Cerakote finish options; the rear of every DISSENT rifle features the DISSENT side folding stock with adjustable length of pull and adjustable cheek riser. A forward non-reciprocating charging handle allows for quick and easy manipulation without coming off target and the M-LOK handguard with top picatinny rail provides ample mounting space for whatever accessories you please. Adjustable Gas Block - 300 BLK is an incredibly adaptable cartridge with different loadings for specific uses, like suppressed. With the adjustable gas block on each 300 BLK DISSENT you can fine tune the gas system to best suit the supersonic or subsonic ammo loadings you like best. Lifetime Quality Guarantee - We aim to please, that’s why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. - PLATFORM MK4 - CALIBER .300 BLK - OPERATING SYSTEM COMPACT ACTION-DIRECT IMPINGEMENT - BARREL LENGTH 16.1 - BARREL TWIST 1:7 - BARREL CONTOUR MT - BARREL MATERIAL 4140CM, SBN - BARREL TWIST 1:7 - MUZZLE DEVICE CMMG ZEROED MUZZLE BRAKE - MUZZLE THREAD 5/8 X 24 - GAS PORT LOCATION CARBINE - GAS BLOCK ADJUSTABLE 0.750" - UPPER RECEIVER DISSENT 7075 T6 ALUMINUM - LOWER RECEIVER MK4 FORGED 7075 T6 ALUMINUM - HAND GUARD CMMG 15" PROPRIETARY - FINISH CERAKOTE - CHARGING HANDLE DISSENT SIDE CHARGER - LEFT - PISTOL GRIP CMMG ZEROED PISTOL GRIP - BUFFER TYPE N/A - RECEIVER EXTENSION 1913 PICATINNY RAIL END CAP - TRIGGER TYPE ZEROED DROP-IN SINGLE STAGE - TRIGGER GUARD CMMG ZEROED TRIGGER GUARD - SAFETY SELECTOR CMMG ZEROED 60/90 DEGREE - MAGAZINE (2) MAGPUL 300BLK 30RD PMAG - WEIGHT 6.15 LBS - LENGTH 26.25" ```json 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