I've got a Colt Series 80 1991a1 Commander that I love...except for the sights. I have trouble seeing the plain black front sight at times. I would like to get a set of 3 dot or Heinie Straight 8 type sights, but I can't find any that will fit my gun. My Commander has a dovetailed rear sight and stake-on front sights. I bought a set of Williams Fire Sights, but when I took them to the gunsmith for installation, the dovetail on the rear sight was too narrow for the cut on my slide! I don't necessarily need tritium sights as this is not a primary carry or defensive gun and I would like to keep costs down. Also, I would like something that doesn't require any cutting or milling of my slide. Any suggestions? Thanks.