Battle Arms Development BAD-RACK-308 Rack Charging Handle AR-10 Rack Ambidextrous HandThe RACK Ambidextrous Charging Handle is the toughest available for the AR 15, AR 10 and 9mm AR PCC platforms. The RACK charging handle is simplicity at its best with only three major components. Unlike other charging handles, the RACK makes no contact with the sides of the receiver preventing wear on the receiver and charging handle. Not only is it fast, buttery smooth, it also minimizes wear to the upper receiver with it's side sliding unlocking