CMMG Dissent MK4 300 Blackout 10.50″ 30+1 AR Pistol

About this product

The CMMG Dissent MK4 is an ultra-compact AR-style personal defense weapon chambered in .300 AAC Blackout. It uses CMMG’s Compact Action upper to house the recoil system in the upper receiver, eliminating the need for a buffer tube. The design includes a forward non-reciprocating side charger that can be configured for left- or right-handed operation and features AR-style ambidextrous controls. The platform is finished in a Black Armor Cerakote and supplied with a Black CMMG Zeroed grip.

Key Specifications

• The caliber is .300 AAC Blackout.
• The capacity is 30 + 1 rounds.
• The barrel measures 10.50″ and features a Black Nitride finish with threading.
• The handguard measures 5.50″ M-LOK.
• The receiver is Aluminum Picatinny rail with Black Armor Cerakote.
• The grip is a Black CMMG Zeroed grip.
• The safety is a CMMG Zeroed 60/90 Degree unit.
• The overall length is 15.70″.
• The weight is 4.80 lbs.
• The stock material is polymer with a black finish.

Compact, modular, and configured for close-quarters use, the Dissent MK4 brings .300 Blackout capability to a portable AR platform with ambidextrous controls and a user-configurable side charger. Its threaded nitride barrel, M-LOK handguard, and Cerakote-finished receiver make it straightforward to build a short-barrel, versatile setup for personal defense or compact range duties while retaining AR ergonomics and accessory compatibility.

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