Shooting my Ruger MkIII Target, it seems like the rear sight notch is way too big compared to the front sight. I measured the front sight at .130" wide and the rear sight notch at .125". Is there a sight blade or sight out there with a narrower notch, for the Ruger MkII-MkIII? I looked in Midway's catalog but didn't see what I thought I needed.

Millett makes a line of sight for Ruger and others. Also check out the Mark III web site
http://www.mkiii.org/forum and this section on finer sights... http://www.ar15.com/content/page.html?id=318

The MKIII.org site is a wealth of information. There are people on there who can answer most any Mark III question.

Thanks. They sure know a lot about the Mk III, especially Bullseye.