BCM Gunfighter Quad Rails Black 15-inch M-LOK

BCM MCMR-15 (M-LOKA(R) Compatible* Modular Rail) Featuring the same industry leading barrel nut and lock up design as originally introduced on BCM s evolutionary KMR handguard the MCMR Series of handguards gives the shooter modularity in the M-LOKA(R) platform. This proprietary patented mounting system (US Patent 8904691) includes a mechanical index to the 12:00 rail and positions mounting hardware to mitigate the movement caused by heat generated by the weapon system.