Bust 'em up better. The Browning HiViz Bird Buster Magnetic Shotgun Sight can turn your shooting around adding visibility and a better point of reference to your sight plane. It attaches magnetically to your shotgun's rib in seconds. The Bird Buster includes three sizes of magnetic bases to fit virtually any shotgun rib. It also includes four interchageable LitePipes of different diameters to match different lighting conditions.