Durability and dead-on accuracy make troy battlesights the hands-down first choice of special ops and tactical users worldwide.Troy's hk front fixed battlesight, a permanent, rail-mounted alternative to a standard a2 sight, allows limitless mounting options on all-length rails with a serrated ramp.Note: will not work with a railed gas block that is higher or lower than the receiver.Frame Material: AluminumFrame Color: Black Hardcoat AnodizedFirearm Fit: HKStyle: FixedFront Color: BlackFirearm Type: AR Platform