The CMMG Dissent Mk4 AR-15 Upper in 22 ARC brings advanced cartridge performance to the AR-15 platform, featuring CMMG’s unique bufferless Compact Action system. This upper assembly includes a precision 16.1-inch 4140 chrome-moly steel barrel with a 1:7 twist, housed in a durable 7075 T6 aluminum receiver with a Cerakote or hard coat anodized finish. The proprietary 15-inch handguard and integrated 1913 Picatinny rail end cap offer robust accessory mounting options and compatibility with a range of AR-15 lower receivers.
16.1-inch 4140 chrome-moly steel barrel with 1:7 twist
Proprietary 15-inch handguard and 7075 T6 aluminum upper receiver
Forward non-reciprocating side charger and adjustable 0.750" gas block
Designed for versatility and precision, this upper group allows for easy customization and caliber conversions while maintaining reliability and top-tier engineering for demanding AR-15 enthusiasts.