I took the plunge and picked up the Glock 21SF at the gun show yesterday. Yes, it does have the picatinny rail. I totally spaced this when I went to buy a holster for it and I picked up a Fobus holster for it (GL3?). Anyway, so I have this holster that I cannot return and it does not fit. Is there somewhere in Indy I can 'return' it and at least get store credit? I just want a holster that will fit this with the picatinny rail...