I own and love a Ruger GP-100 4" stainless. Bought it at a gun show about 2 - 3 years ago new for about $450 + tax. Probably could have gotten it cheaper online and shipped to a local FFL, but I saw it there and wanted to walk away with it. Learned how to detail strip it. Replaced the hammer and trigger springs with slightly lighter Wolff springs and lightly polished all contact surfaces for an easier DA pull. Built like a tank and runs like a champ. I even carry it concealed from time to time.
Here it is in my carry rig for it. RGrizzle OWB on a Galco 1.5" gunbelt:
Meprolight makes a drop-in front night site, and the rear sites can be replaced by Meps without too much difficulty, from what I understand. I decided to leave the adjustable target sites on. At least for now.
Great nightstand wheelie, if you ask me!
Remember, in a life-or-death situation, when seconds count, the police are only minutes away.
Barre