Konus 7244 30mm Dot Scope with Dual Mount Rail (Red/Green) Advanced 30mm electronic dot sight features a 5MOA red and green dot. Revolutionary dual-mount rail fits standard 5/8" bases and reverses to fit small bore 3/8" bases found on .22's and air guns. Rheostat click control provides 5 intensity changes for all lighting conditions. 1X magnification offers unlimited eye relief. Great for shotgun, slug, and handgun applications.