What has worked for me in the past is to ask a gunsmith who has been in business a while.......and they generally have a few topends laying around.......I have 5 waiting to be built that didnt cost over $50 a slide, and there in various stages of "complete" they all came with barrel's, some will have the internals, and some have one sight but not the other........that sort of thing......I havent priced any in a while and they were bought from friends....make some contacts in the shooting community in your area.....it always helps.....fubsy.