This is the camouflaged version of the Bird Buster front magnetic shotgun sight from HiViz. It comes with two red and two green fiber optic LitePipes, half of which are round, and half of which are triangular. It includes a clear carrying case, and three magnetic sight frames. The sight fits ventilated ribs from 1/4 inch to 3/8 inch width.
Most shotguns with vent rib barrels