Made of precision machined 6061 aircraft aluminum with premium anodizing. 11.8" free float handguard for full length AR15 .223. Provides 7 Weaver-Picatinny rails for lights, lasers, bipods, grips,and sights. Customizable four 7 slot and two 16 slot detachable rails and top 11.8" fixed rail. Net weight with all rails attached 1s 24.2 oz. Innovative 45 degree side mounting base offers extra tactical options. Free float barrel nut is included.