Originally Posted by kcebcj
I get a little annul some times when shooting targets (4-16 HSLR) and mumble about the 1/2 MOA adjuster but bought it to go on a hunting rifle so it does what it was designed for very well. Have used it over a year now and the only complaint is the eye focus knob would not stay where I put it so made a spacer the proper width when its focused and sense doing that it stays where I put it.
A guy could use in O-ring and put behind for the spacer. you can get different thicknesses diameters etc. per your application and gap of focus ring.