CMMG 55B8D86-SG Dissent 5.56x45mm 10.50" 7075-T6 Aluminum 9.60" M-LOK Handguard

The CMMG 55B8D86-SG Dissent 5.56x45mm rifle delivers a compact, highly maneuverable platform optimized for shooters who demand precision without sacrificing portability. Built around a 10.50-inch barrel machined from 7075-T6 aluminum, this firearm balances velocity retention with an overall length suited to confined spaces—a critical advantage in dynamic tactical environments, vehicle operations, and room-clearing scenarios where traditional full-length rifles become liabilities.

The 9.60-inch M-LOK handguard provides extensive modularity for mounting lights, lasers, grips, and other accessories without the weight penalty of heavier systems. The aluminum construction throughout keeps the rifle at 5.21 lbs—light enough for extended carry operations while maintaining the structural rigidity required for consistent shot placement. The M-LOK interface is military-standard, ensuring compatibility with the widest selection of aftermarket components and allowing shooters to customize their setup for specific mission requirements or personal preference.

This configuration suits operators, LEOs, and serious rifle enthusiasts who prioritize maneuverability in close-to-medium range engagements. The short barrel makes the Dissent ideal for patrol carbines, home defense, and training scenarios where quick target transitions and rapid deployment matter. The 5.56x45mm cartridge delivers reliable performance across common defensive and training loads, and the compact profile minimizes the learning curve for shooters transitioning from patrol rifles to specialized platforms.

The CMMG Dissent occupies a distinct niche between full-sized carbines and short-barrel rifles, offering shooters a balanced alternative when length and weight are operational constraints. Dimensions of 31.4 inches overall preserve ergonomic handling while fitting within the practical limits of vehicle storage and tight spaces. For buyers evaluating compact 5.56 platforms, the Dissent's aluminum construction, modular handguard, and established CMMG reputation for reliability make it a serious contender.