The smallest gun I actually carry is a pm9 and I prefer to carry it on the belt. OWB most of the time. IWB when the shirt is kinda short and I don't want the bottom of the holster to show. With a good belt and holster, I find that OWB prints no more than IWB. I'm not a big fan of appendix tho. It just doesn't work for me. Carry safe. Don't shoot your nuts off.