CMMG DISSENT Mk4 5.7x28mm Compact AR Pistol with 6.5" Barrel, Titanium Finish, Side-Folding Brace
This CMMG DISSENT Mk4 is a compact AR-15 platform pistol chambered in 5.7x28mm, configured from the factory in a Titanium finish. It features CMMG's bufferless DISSENT design with the recoil/action system housed in the upper receiver (CMMG Compact Action), along with a left-side, non-reciprocating side charging handle. The receiver is marked "DISSENT" and "Mk4," and the serial number on the firearm matches the factory box label.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Specific Condition Notes: This firearm is in great shape. There are some minor, superficial scratches and blemishes present. The bore is clean and shiny.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
What's Included
- Original CMMG factory box
- 2x CMMG-branded detachable box magazines marked 5.7x28mm (32-round)
Built on a 7075-T6 aluminum receiver set, this DISSENT Mk4 uses CMMG's Radial Delayed Blowback action type in a compact, bufferless layout. The recoil system is housed in the upper receiver, keeping the rear of the firearm clean and supporting the folding brace setup.
This example is equipped with a polymer, side-folding brace and an ambidextrous safety selector. It also includes a free-float handguard and a long, top Picatinny-style rail that runs along the upper for straightforward mounting flexibility.
Factory configuration details are clearly documented: the factory label describes it as "Pistol, DISSENT, Mk4, 5.7x28mm, Titanium" with a stated 6.5" barrel. Up front, it wears a short cylindrical muzzle device with forward-facing ports/relief cuts.
With a listed capacity of 32+1 and two included 32-round magazines, this DISSENT is set up as a high-capacity 5.7x28mm pistol package in a compact footprint. It is a recent-release CMMG configuration with the manufacturer part number 54AA847-TI.




