Weaver Tactical Picatinny Ring Cap 30mm with Picatinny Rail Made of the highest quality materials Hunting scopes rings Another quality Bushnell product Designed to replace the top ring section of our popular Tactical 6-Hole Ring (in either 1" or 30mm) Cleverly incorporate a small Picatinny rail section thats ideal for mounting a small dot optic over a magnified scope Get the best of both worlds