Aluminum heat shield, lessening heat transfer to the handguard and shooter's hand
Made of an impact and temperature resistant high strength polymer
While offering top notch fit and finish the BCM PMCR is a direct "drop in" replacement for AR pattern rifles that utilize a Delta ring barrel nut assembly. NOTE: For mil-spec, non-free float M4 Carbine-type platforms with "round" front handguard retaining cap.