BCMA(R) PMCR (Polymer M-LOKA(R) Compatible Version Rail)- Mid Length Direct replacement handguard featuring simple "drop in" design. For most mid-length gas system, non-free float carbine-type platforms The PMCR - Mid-Length will only fit the M16A1 "Triangular" front handguard retaining cap* Natural ergonomics; slim, comfortable and lightweight, only 5.8 ounces Aggressive textured area for needed traction Three, four-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. *For those that have a round front handguard retaining cap, on the mid-length gas system rifle, Bravo Company offers specialized insert adapters that will allow the PMCR - Mid-Length handguard to fit. Please visit www.bravocompanyusa.com to purchase the inserts. *M-LOKA(R) is a registered trademark of Magpul Industries Corp. https://www.magpul.com/ip