- Drop in replacement for standard carbine length AR-15 and M4 hand guards - Easy to install utilizing existing delta ring and round or triangular front hand guard retaining cap - Superior modular flexibility - M-LOK slots at 2, 6 and 10 o'clock for mounting accessories - Extended grip area - Constructed with durable, heat-resistant polymer - Integrated aluminum heat shield - Depression for overhanging optic mounts In the Box Hand guard instructions Magpul sticker Specifications: Build Reinforced polymerLength 7.1 in.Height 2.5 in.Width 2.2 in.Weight 6.8 oz.Color OD GREEN California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov