BCM MCMR 9″ M-LOK Free-Float Handguard – Black

Description

The BCM MCMR 9 is a free-floating M-LOK compatible handguard engineered for AR-platform rifles. It uses BCM’s patented mounting system (US Patent 8904691) with a mechanical index at the 12:00 rail to reduce mounting movement caused by heat. Constructed from precision-machined aluminum and finished with a hard coat anodize, the MCMR provides a modular mounting surface while minimizing weight. The design accepts pistol-length, carbine-length, and mid-length gas systems when paired with a low-profile gas block.

Key Specifications

• The actual measured length to the flare is 9.4 inches.
• The marketed size is 9-inch M-LOK.
• Construction uses Precision Machined 6061-T6 aluminum alloy.
• The finish is a black hard coat anodized surface.
• The handguard alone weighs 6.6 ounces.
• It is compatible with pistol-, carbine-, or mid-length gas systems with a low-profile gas block.
• The mounting system is M-LOK compatible.
• It uses a steel barrel nut to resist movement under heat.
• The inside diameter measures 1.3 inches.
• The overall width is 1.5 inches.

Lightweight yet rugged, the BCM MCMR 9 delivers a stable modular platform for attaching accessories and configuring builds without loading the barrel. Its engineered profile and proven lock-up approach provide repeatable alignment and thermal stability for shooters who prioritize reliable, low-mass components in precision, competition, or duty-style AR builds.