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