The CMMG Dissent Br4 6mm ARC rifle in Armor Black delivers excellent ballistic performance from a smaller semi-auto platform, with a 16.1-inch barrel (CMMG part no. 60AB40CAB). CMMG says the 6mm ARC rivals the extended-range performance of bigger rounds usually chambered in larger frame rifles. Combined with the low-recoil Br4 platform, this flat-shooting round suits hunters and extended-range target shooters. An adjustable gas block and an M-LOK handguard round out the package.

Key Specifications

• The chambering is 6mm ARC, a flat-shooting cartridge for medium-range work.
• The barrel is 16.1 inches long.
• Barrel twist is 1:7.5, matched to the cartridge.
• The muzzle carries a ZEROED SVB brake on 5/8×24 threads.
• Capacity is 10 rounds, and the rifle comes with two CMMG 10-round magazines.
• The safety is a reversible cross-bolt selector.
• The stock is a Magpul SGA compatible with Remington 870 stocks.
• The gas block is an adjustable 0.750-inch design.
• The handguard is a 15-inch CMMG proprietary M-LOK with a top Picatinny rail.
• The rifle weighs 8 pounds.

Frequently Asked Questions

What is 6mm ARC good for? CMMG says the 6mm ARC offers excellent ballistic performance that rivals bigger rounds, which makes it a choice for hunters and extended-range target shooters.

What is the barrel twist? The barrel is rifled at 1:7.5.

How many rounds does it hold? It holds 10 rounds, and the rifle comes with two CMMG 10-round magazines.

Buy the CMMG Dissent Br4 6mm ARC Rifle, Armor Black

The 6mm ARC Br4 delivers long-range ballistics in a lightweight package. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and see more AR rifles.