The CMMG DISSENT Mk4 is a compact short-barrel semi-automatic rifle designed for users who prioritize compact handling and modularity. Chambered in 5.56x45mm with a 10.5″ barrel, it employs CMMG’s Compact Action direct impingement system that houses the action and recoil system in the upper receiver. The design includes a side-folding stock with adjustable length of pull and cheek riser, plus an adjustable gas block for fine-tuning suppressed or unsuppressed operation. Finished in Armor Black and supplied with two 30-round CMMG magazines, the DISSENT balances portability with a full-featured parts set.
Key Specifications
- The platform is Mk4.
- The caliber is 5.56x45mm.
- The barrel length is 10.5″.
- The operating system is Compact Action – Direct Impingement.
- The barrel twist is 1:7.
- The barrel material is 4140CM, SBN.
- The muzzle device is a CMMG ZEROED Linear Compensator.
- The muzzle thread is 1/2 x 28.
- The gas block is Adjustable 0.750″.
- The package includes (2) CMMG 30rd magazines.
With a compact footprint, adjustable gas management, and a robust set of machined aluminum components, the DISSENT Mk4 is built for users who need a short-barrel platform that accepts accessories and tuning. Its combination of a housed upper receiver action, reversible side charger, M-LOK handguard and folding stock delivers a practical, configurable package for responsible, lawful ownership where permitted by local and federal regulations.
Product information is supplied by the manufacturer and/or distributor and may be automatically formatted or enhanced using AI for clarity and consistency. While we strive for accuracy, specifications, features, and included items may change without notice. Always verify details using the manufacturer’s official documentation and the information shown on this product page before purchase or use.
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