Quick view Leupold Leupold Mark 4, Leu 52136 Mark 4 Hdl Mount Ar15m16 Mt $30.22 Mark 4 tactical bases are the only bases to accommodate both the oversized 8-40 screw and a 6-48 screw, providing compatibility with the widest range of modern tactical firearms.Both styles of screws are included with each mark 4 base.Securely attach... Compare Add to Cart
