CMMG Dissent BR4 9mm Luger 16.10″ 10+1

About this product

The CMMG Dissent BR4 is an AR-style 9mm platform built around a 16.10″ black nitride steel barrel and configured for common pistol-caliber applications. It features a Picatinny-rail aluminum receiver with a 13.50″ M-LOK handguard and a Magpul SGA black polymer stock. With a single-stage trigger and a 10 + 1 capacity, the BR4 is intended for range training, pistol-caliber carbine competition, and practical compact applications.

Key Specifications

• Chambered in 9mm for widely available pistol-caliber ammunition.
• The barrel measures 16.10″ to meet AR-style handling characteristics.
• Barrel material is Steel finished with a black nitride process as stated in the product name.
• The rifling twist rate is 1:10.
• Magazine capacity is 10 + 1.
• Overall weight is 7.60 lbs.
• Overall length is 36.70″.
• The receiver is constructed from aluminum and includes a Picatinny rail.
• Equipped with a Single Stage trigger for consistent break.
• Includes a Magpul SGA Black Polymer stock for ergonomic shoulder placement.

Purpose-built as a 9mm AR-style carbine, the Dissent BR4 balances practical ergonomics and proven components for dependable range use and competition-ready handling. Its combination of a nitride-treated steel barrel, a reinforced aluminum receiver with accessory rail, and a proven Magpul stock delivers a user-focused package that emphasizes controllability and modularity without unnecessary complexity.

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