Hi Steven and welcome to the forums. As most of the members will probably say in here, throwing a first, second, or third hand slide on a frame is not that easy. Alot of times they are fitted to the frame rails and wont just slide together. If you get one too loose it will beat the gun apart and one too tight forced on will just gaul and freeze up if you can even get one on. Best bet would be to find a competent gunsmith to do the fitting for you.