I'm not real big on hanging stuff off of guns, but, of course I needed a sight for my Freedom Ordnance FX-9, so I hung a Tru Glo multi-dot sight on mine, that I had in the safe. I know I could add some flip up sights, too. The big question is where to mount the 3" picatinny rail and what will I use it for (maybe a sling swivel). Anybody have any suggestions?