The CMMG Dissent Mk3 (brand part no. 33A380CTNG) is a large-frame pistol chambered in 8.6 Blackout, the fast-twist .338-caliber cartridge built to deliver heavy subsonic and supersonic bullets from short barrels. CMMG pairs a 12.5-inch 4140 chrome-moly barrel with an adjustable gas block and a zeroed linear muzzle device on 5/8×24 threads, making the Dissent an ideal suppressor host tuned for the cartridge’s suppressed mission. The compact Dissent receiver set is machined from 7075-T6 aluminum and finished in Tungsten Cerakote. Among AR pistols, the Dissent Mk3 favors shooters building a hard-hitting, can-ready 8.6 Blackout platform.

Key Specifications

• The chambering is 8.6 Blackout, optimized for heavy subsonic and supersonic loads.
• The barrel measures 12.5 inches in 4140 chrome-moly steel.
• The muzzle is threaded 5/8×24 and wears a zeroed linear muzzle device.
• An adjustable gas block tunes the action for suppressed or unsuppressed fire.
• The receivers are 7075-T6 aluminum.
• Finished in Tungsten Cerakote.
• The action is semi-automatic in CMMG’s compact Dissent pistol configuration.

Frequently Asked Questions

Why choose 8.6 Blackout? Its fast twist stabilizes very heavy .338 bullets, delivering hard-hitting subsonic performance that pairs naturally with a suppressor.

Is this pistol suppressor-ready? Yes, the 5/8×24 threaded muzzle and adjustable gas block are set up for running a can out of the box.

Buy the CMMG Dissent Mk3 Pistol

A tuned, thread-ready 8.6 Blackout pistol in Tungsten Cerakote is exactly what this Dissent Mk3 delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.