CMMG DISSENT MK4 | 9mm | 16.1 in

The CMMG DISSENT MK4 is a pistol-caliber carbine built on a standard AR-15/Mk4 lower that accepts CMMG 9mm AR conversion magazines to provide familiar AR ergonomics and controls with 9mm ammunition. This 16.1-inch model features a side-folding DISSENT stock with adjustable length of pull and cheek riser, a non-reciprocating forward charging handle, and an M-LOK handguard with a top Picatinny rail for accessories. Its operating system is a compact action radial delayed blowback designed for reliable 9mm function. A suitable optic priced under $1,000 that pairs well with this platform is the Vortex Strike Eagle 1-6×24, which provides fast target acquisition and dialing for intermediate distances.

Applications for this platform include pistol-caliber carbine competition and range training/recreational shooting where low-cost 9mm ammo and AR-style controls are desired.

Product Specifications

• The platform is Mk4.
• The caliber is 9mm.
• The operating system is Compact Action – Radial Delayed Blowback.
• The barrel length is 16.1 inches.
• The barrel twist rate is 1:10.
• The barrel material is 4140CM SBN.
• The muzzle device is a CMMG ZEROED Muzzle Brake.
• The muzzle thread is 1/2 x 28.
• The upper receiver is DISSENT 9mm 7075 T6 Aluminum.
• The lower receiver is Mk4 Forged 7075 T6 Aluminum.
• The handguard is a CMMG 15 Proprietary M-LOK design with a top Picatinny rail.
• The finish is Cerakote.
• The charging handle is a DISSENT Side Charger (reversible).
• The stock is a DISSENT Side Folding Stock with adjustable length of pull and cheek riser.
• The package includes CMMG 30rd (2) magazines.
• The UPC is 810144721798.

The DISSENT MK4 balances AR-15 familiarity with dedicated 9mm performance, offering controls and ergonomics that will be intuitive to AR shooters while using economical pistol ammunition. The folding stock, reversible side charger, and expansive accessory railing make this chassis adaptable for a range of builds and mission profiles where a PCC is preferred.