I have the Kel tec 9mm with belt clip kit. I slip it in between my belt and pants. It lays so flat you can wear a t-shirt and it will not print.
US Naval Aviation AMSC 20 years ( retired) ASW/Aircrew Wings, P2V plane capt.
US Naval Academy (DI) Shooting Instructor (Annapolis) NDW shooting team member and a lot more stuff!
Alway keep your six covered