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IA Iron River Armory

CMMG DISSENT BR4 .300 AAC Blackout 16.1″ Armor Black

SKUTSW|168190 Conditionnew CategoryAR Rifles
$2027.82
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Specs at a glance

CMMG DISSENT BR4 .300 AAC B… SPECS AT A GLANCE 16.1 inches SIZE
Editorial diagram — measurements verified during testing.

About this product

The CMMG DISSENT BR4 is a semi-automatic carbine chambered in .300 AAC Blackout with a 16.1-inch threaded barrel and Cerakote Armor Black finish. It ships with two Magpul 10-round PMAGs and a Magpul SGA synthetic stock for an out-of-the-box-ready configuration. The design includes a full-length top Picatinny rail, an M-LOK handguard and an adjustable gas block for tuning with a variety of loads. Controls are ambidextrous where noted and the rifle uses robust 7075 T6 aluminum receivers.

Key Specifications

  • The caliber is .300 AAC Blackout.
  • The barrel measures 16.1 inches and is described as threaded.
  • The twist rate is 1:7.
  • The action type is Semi-Auto.
  • Included magazines are (2) Magpul 10rd PMAGs.
  • The finish is listed as Cerakote Armor Black.
  • The upper receiver material is 7075 T6 aluminum.
  • The lower receiver material is 7075 T6 aluminum (BR4 billet).
  • The handguard is a CMMG 15 proprietary M-LOK style.
  • The charging handle is a reversible DISSENT side charger.

With a combination of durable materials, a user-adjustable gas system, and included magazines, the DISSENT BR4 is configured to handle a range of sporting uses from precision target work to hunting and general range use. Its practical accessory interfaces and reversible controls make the platform adaptable to a shooter’s preferred setup while maintaining a straightforward, serviceable design.

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Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$2027.82