The sights on the Ruger slim 9 are terrible and will not stay adjusted. I have had it for about 3 years. Is there a good after market sight to put on it? It is a great CC weapon. I haven't seen a good 45 slim enough to be comfortable unless any of you have a suggestion. I also have a Mark 3, for trade if anyone is interested in a good 22lr to shoot economically at the range.