Petra Industries, Inc. - Consumer Electronics Replen BSA Optics 30mm Matte Black Finish Red Dot Sight Riflescope Weaver Style Attachment 30Mm, 11 Position Rheostat Multi-Purpose Sighting System for Close Quarter and Medium Range Targets Lightweight Enough for Small Calibers Plinking On The Range, Yet Durable Enough for Large Calibers Used by Hunters and Law Enforcement Departments 30Mm, 11 Position Rheostat Multi-Purpose Sighting System for Close Quarter and Medium Range Targets Lightweight Enough for Small Calibers Plicking On The Range, Yet Durable Enough for Large Calibers Used by Hunters and Law Enforcement Departments