Real Avid AVVMBS Viz-Max Bore Sighter Multi-Caliber AluminumViz Max is a revolutionary, yet uncomplicated, next generation instrument. No more fumbling with extra pieces and underpowered lasers to find your mark. Housed in the rugged and protective exoskeleton is a precision machined, factory calibrated laser. The laser projects a powerful green dot providing maximum visibility and quick acquisition. The bore attachment is fast and easy with the hold fast neodymium magnet.