BCMA(R) PMCR (Polymer M-LOKA(R) Compatible Version Rail)- Carbine Direct replacement handguard featuring simple "drop in" design. For mil-spec, non-free float M4 Carbine-type platforms The PMCR - Carbine will only fit the "round" front handguard retaining cap Natural ergonomics; slim, comfortable and lightweight, only 4.48 ounces Aggressive textured area for needed traction Three, three-hole M-LOKA(R) compatible mounting slots, mounting surfaces (10:30, 1:30, and 6:00 o'clock placements) Aluminum heat shield, lessening heat transfer to the handguard and shooter's hand Made of an impact and temperature resistant high strength polymer Patent Pending design. Made in the USA. *M-LOKA(R) is a registered trademark of Magpul Industries Corp. https://www.magpul.com/ip