The CMMG Dissent BR3 (brand part no. 38A530CTNG) is chambered in the tried-and-true .308 Winchester, balancing traditional bolt-gun ergonomics with the versatility of a 30-caliber semi-auto carbine. The 16.10-inch black nitride threaded barrel sits inside a Tungsten Cerakote aluminum receiver with a full-length Picatinny top rail, while the M-LOK handguard allows proper outfitting with modern optics and accessories. Full ambidextrous controls make it comfortable for shooters of either hand, and the included Magpul SGA stock rounds out a dependable big-bore AR platform. It’s built for shooters who want .308 power without giving up modern ergonomics.

Key Specifications

• Chambered in .308 Win/7.62 NATO, delivering 30-caliber power in a semi-auto carbine format.
• Built around a 16.10-inch barrel rifled with a 1:10 twist.
• Finished with a black nitride, threaded muzzle for durability and accessory mounting.
• Feeds from a 10+1 capacity, with two Magpul PMAG magazines included.
• Houses the action in a Tungsten Cerakote-finished aluminum receiver with a full Picatinny top rail.
• Fitted with an M-LOK handguard for mounting optics, lights, and other accessories.
• Runs fully ambidextrous controls for comfortable use by either-handed shooters.
• Uses a reversible crossbolt safety matching the platform’s ambidextrous layout.
• Rides on a Magpul SGA black polymer stock for traditional, dependable ergonomics.

Frequently Asked Questions

Is the Dissent BR3 comfortable for left-handed shooters? Yes, it ships with fully ambidextrous controls including a reversible crossbolt safety.

How many magazines are included? Two Magpul PMAG magazines ship with the rifle.

What is the Magpul SGA stock? It’s a fixed polymer stock designed for traditional rifle ergonomics and a stable cheek weld.

Buy the CMMG Dissent BR3 Rifle

Order the CMMG Dissent BR3 in .308 Win from our Lubbock, Texas gun shop for fast, insured shipping to your local FFL. CMMG built the BR3 for shooters who want .308 power with modern AR ergonomics, part of our full semi-auto rifles lineup.