Apex Gear Magnitude 5 Pin Dovetail Sight (.019")Apex Gear Magnitude 5 Pin Dovetail Sight (. 019") PROBRITE pin design increases brightness without crowding thesight picture Micro adjustable windage and elevation Anti reflective texture inside aperture and sunshade reduces glare Adjustable 2nd and 3rd axis level Aperture has 2 in. inside diameter New shooter's ring design for improved peep alignment Precision machined aluminum construction Overbuilt aperture and mounting bracket for maximum strength