CMMG 28A490FMB Dissent MK4 | 22 ARC | 16.1″ | 10rd

The CMMG Dissent MK4 is a modern sporting rifle built around the 22 ARC cartridge and a bufferless Compact Action. It pairs an AR-style manual of arms with a non-reciprocating forward side charger and a folding Dissent stock for a compact carry profile. A CMMG EML15 M-LOK handguard with a top Picatinny rail provides mounting options for optics and accessories. Consider a Vortex Strike Eagle 1-6×24 optic as a capable, sub-$1,000 option that complements the cartridge and intended uses.

Applications: varmint and small-predator hunting, and precision AR-style target/range shooting.

Product Specifications

• The UPC is 810148627218.
• The caliber is 22 ARC.
• The action is semi-automatic.
• The barrel measures 16.1 inches.
• The rifle weighs approximately 6.7 pounds.
• The magazine capacity is 10 rounds.
• The rifle ships with detachable magazines and the detachable magazine status is Yes.
• The stock is a black synthetic Dissent side folding stock with adjustable length of pull and adjustable cheek riser.
• The metal finish is a Cerakote Midnight Bronze (colored).
• The handguard is a CMMG EML15 M-LOK with a top Picatinny rail.
• The muzzle threads are 1/2-28″.
• The gas system is a .750″ car-length gas system.
• The barrel material is listed as MT 4140CM SBN.
• The rate of twist is 1:7″.
• The package includes (2) CMMG 10rd magazines and a zeroed SV muzzle brake and a zeroed drop-in single stage trigger.

The Dissent MK4 combines AR familiarity with a modern bufferless action and convenient folding stock to reduce transport length while preserving control and modularity. The M-LOK handguard and top rail let you fit optics, backup sights, and support accessories without altering the rifle’s baseline ergonomics. Its chambering and build make it well suited for varmint work and precision-oriented range sessions where reduced recoil and high-velocity performance are desired.

Related Videos: