CMMG Dissent 9mm Pistol Midnight Bronze 10.5 in. – Superb Mk4 Pistol

Description

The CMMG Dissent 9mm Pistol Midnight Bronze is a 10.5-inch, bufferless 9mm AR-style pistol built on CMMG’s RDB operating system. It wears Midnight Bronze Cerakote, uses a left-side forward charging handle, and ends in a Picatinny rail at the rear instead of a buffer tube.

CMMG Dissent 9mm Pistol Midnight Bronze Overview

Most 9mm AR pistols are straight blowback designs with heavy buffers and a sharp recoil impulse. CMMG’s Radial Delayed Blowback system uses a rotating bolt with angled locking lugs that slow the unlocking of the action, which reduces felt recoil and lets the bolt be lighter. The Dissent version also moves the recoil system into the upper receiver, so there is no buffer tube. That allows a compact package and a rear 1913 Picatinny rail end cap where many owners mount an approved pistol brace. 5 inch version.

The RDB Action in Practice

In use the RDB action feels smoother than typical blowback 9mm carbines, and the gun tolerates a range of bullet weights. A ZEROED RBB brake on the 1/2×28 threaded muzzle further cuts muzzle rise, though it adds noise and flash. The 1:10 twist barrel is 4140 chrome moly with a salt bath nitride finish. Expect it to run well on quality 115 to 147 grain ammunition after a short break-in.

Controls and Layout

Lower controls follow the AR-15 pattern, including a ZEROED 60/90 degree safety selector and a ZEROED drop-in single-stage trigger on a forged 7075 lower. The Dissent side charger sits forward on the left and does not reciprocate, so you can charge the gun with your support hand without breaking your firing grip. The upper is 7075 T6 aluminum in Midnight Bronze Cerakote.

Pistol Rules and Accessories

This is sold as a pistol with no stock or brace installed. Adding a shoulder stock to a pistol with a barrel under 16 inches creates a short-barreled rifle, which is an NFA item requiring prior ATF approval. Arm brace rules have changed repeatedly, so check current federal guidance and your state law before adding one. A vertical foregrip on a pistol can also create an NFA issue; angled grips and hand stops are the common workaround.

Magazines

CMMG lists two 30-round CMMG magazines with this model, while some distributor listings describe 33-round capacity and a single magazine. Confirm what is in the box at transfer. Thirty-round magazines are not legal in states with 10 or 15 round limits, and spare CMMG-pattern 9mm magazines cost more than common pistol magazines.

Ownership and Value

Midnight Bronze Cerakote is durable and easy to clean, and CMMG backs the gun with a lifetime quality guarantee. The Dissent is more expensive than many 9mm AR pistols, but its recoil system and folding-friendly bufferless design are real advantages. Resale demand for CMMG products is generally good, especially in the less common finishes.

State Laws and Ownership

AR-style pistols are restricted or banned in states including California, New York, New Jersey, Connecticut, Maryland, Massachusetts, Washington, Illinois and Colorado, and some also cap magazine capacity or regulate threaded barrels. Local laws may add more limits. Confirm legality and transferability with your dealer before ordering.

Specifications

• Manufacturer: CMMG
• Model: Dissent Mk4 9mm, part 94A8041-MB
• Caliber: 9mm Luger
• Operation: RDB, bufferless
• Barrel: 10.5 inch, 4140CM nitrided, 1:10 twist, 1/2×28
• Muzzle device: ZEROED RBB brake
• Upper: Dissent 9mm 7075 T6
• Lower: Mk4 forged 7075 T6
• Handguard: CMMG 9.6 inch M-LOK
• Rear: 1913 rail end cap, no brace included
• Trigger: ZEROED drop-in single stage
• Magazines: Two 30-round per CMMG
• Finish: Midnight Bronze Cerakote
• UPC: 810103470088

Before You Buy

Federal law requires this handgun to ship to a licensed FFL dealer for transfer with Form 4473 and a background check, and buyers must be 21 or older to purchase a handgun from a dealer. Never add a shoulder stock without an approved ATF Form 1.

Who It Is For

The CMMG Dissent 9mm Pistol Midnight Bronze is a great fit for shooters who want a soft-shooting 9mm AR pistol for the range or home, PCC fans who like the Dissent controls, and owners who already carry 9mm and want ammo commonality.

Buy the CMMG Dissent 9mm Pistol Midnight Bronze at MAG5 Firearms

MAG5 Firearms is a family-owned FFL in Collegeville, Pennsylvania. Order the CMMG Dissent 9mm Pistol Midnight Bronze online and ship it to your local FFL dealer, or browse our full selection of firearms for more pistols. For factory details, visit CMMG.