Aim sports ar10 308 free-float handguard has been built to provide rugged reliable performance.It features seven panels of keymod mount-ability built-in anti-rotation indexing and proprietary designed steel mounting hardware to ensure easy rock solid installation.It is constructed of black anodized 6061-t6 aluminum with a 1913 rail.The ar10 handguard is compatible with dpms style high profile upper receivers and with keymod accessories.This high mount model is 13.5" long.Rails: PicatinnyType: HandguardFirearm Type: AR PlatformFirearm Model: AR-10Material: 6061-T6 AluminumFinish: AnodizedFeatures: KeymodFree Floating: Yes