As soon as the Sheriff's Dept. approves my application for a permit to purchase a handgun, I plan to order a new Ruger GP 100. The only remaining question in my mind is whether to get an adjustable or a fixed sight model. All other considerations aside, I would prefer a fixed sight. However, I also would like to have a red insert front sight and a full shroud, which (I have been told) are only available with adjustable sight models. My concern about an adjustable sight is that I (being a novice) would not be good at sight adjustments. I'm sure a factory setting would be more accurate than any adustment I might make. So, GP 100 owners, please educate me: Is the adjustable sight factory set, so that I could just leave it as is and have an accurately sighted gun? And will it stay that way if I don't put a screw driver on it? Is the adjustable sight adjustable for both horizontal and vertical settings? (I would be less aprehensive if the horizontal setting were fixed, and only the vertical adjustable).