Drop-in replacement for carbine length factory handguards Compatible with MilSpec AR-15 and M4 airsoft guns Includes one 5-slot and one 11-slot Picatinny rail adapters Installs using existing delta ring and retaining cap 6 KeyMod slots at 7 angles around handguard In the Box Handguard 5-slot Picatinny adapter 11-slot Picatinny adapter mounting hardware Specifications: Construction Anodized AluminumCompatibility Carbine Length Gas SystemsLength 6.5 in.Weight 5.9 oz., 7.9 oz. w/ Both Accessory Rails Attached California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov