These drop-in, mil-spec polymer handguards for the AR15/M4 are perfect for that USGI look. They offer aluminum heat shields on both the upper and lower halves, providing heat protection for your hands. The Carbine Length handguard includes dual-layered, melonite coated heat shields for increased protection. These handguards fit between the original Delta Ring barrel nut and the round handguard cap. Features: Make: AR-15/M4, M16 Color: Black Length: 6.5" (Carbine), 8" (Mid-Length), 12" (Rifle) Material: Polymer Made in the USA