The CMMG Dissent Mk4 22 ARC upper group features a patent pending direct impingement Compact Action, with the entire action and recoil assembly housed in the upper receiver for less bulk and length than traditional AR pistols. This upper includes a 15″ M-LOK handguard, top Picatinny rail, threaded barrel, reversible side charging handle, and adjustable gas block. The forward non-reciprocating side charger allows for quick bolt operation without coming off target.
The Dissent 22 ARC features a 16.10″ barrel and 6061-T6 aluminum receiver for reliable performance. With a 1:7 twist rate, the barrel is optimized for the .22 ARC caliber, providing superior ballistic performance. The platform packs 22-250 performance with all the familiarity of an AR15, featuring a non-reciprocating forward side charger. All DISSENT upper groups include a 1913 Picatinny rail end plate to use in place of the lower receiver buffer tube, allowing you to pair with a mil-spec compatible lower receiver and add accessories like slings for a pistol build or a folding stock for a compact carbine.
Every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. this upper delivers precision engineering and field-proven reliability in a compact, modular package.




