CMMG Dissent BR4 5.56 NATO 16.1" Barrel 10rd Magazine Black

The CMMG Dissent BR4 delivers straight-pull bolt action performance in a modern sporting rifle platform, engineered for precision shooting and compliance with restrictive jurisdictions. This 5.56 NATO chambered rifle features CMMG's innovative bolt system that eliminates gas operation complexity while maintaining AR-15 ergonomics.

What Makes This Different

The Dissent BR4 uses CMMG's proprietary straight-pull bolt action system instead of traditional gas operation, resulting in cleaner operation and reduced maintenance requirements. The 7075-T6 aluminum receiver provides military-spec strength while the black nitride finish on the 16.1-inch barrel offers superior corrosion resistance compared to standard phosphate coatings. This design allows for consistent cycling without gas system fouling or timing issues.

Key Features

• Straight-pull bolt action system eliminates gas system complexity and fouling
• 16.1-inch barrel with black nitride finish for enhanced durability and accuracy
• 7075-T6 aluminum upper and lower receivers for lightweight strength
• 13.5-inch proprietary handguard with M-LOK mounting system
• Magpul SGA stock provides adjustable length of pull and cheek height
• 10-round magazine capacity for compliance with capacity restrictions
• Standard AR-15 trigger group compatibility for customization options

The rifle's straight-pull action cycles smoothly for rapid follow-up shots while maintaining the familiar manual of arms that AR-15 users expect. The black nitride barrel treatment penetrates the steel surface for uniform hardness and corrosion resistance superior to chrome lining. Competition shooters appreciate the consistent lock-up and elimination of gas system variables that can affect accuracy.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16.1 inches with black nitride finish
• Overall Length: Approximately 35.5 inches (stock collapsed)
• Receiver Material: 7075-T6 aluminum, Type III hard coat anodized
• Handguard: 13.5-inch proprietary with M-LOK slots
• Stock: Magpul SGA adjustable
• Magazine Capacity: 10 rounds
• Twist Rate: 1:7 inches (typical for 5.56 NATO)
• Weight: Approximately 7.5 pounds

The CMMG Dissent BR4 represents a practical solution for shooters requiring AR-15 ergonomics without gas system operation. The combination of proven materials, innovative bolt design, and quality components creates a reliable platform for both precision shooting and general use applications.