22LR is actually not too shabby out of a rifle. out of a palm sized handgun it is kinda lame.
With all due respect MLS, I’d point out that having two guns is a good thing, having none when you need one, a bad thing. About that second gun ...
I’ve read up a little - you can search on “belly gun”.
Little tiny piece is all you need - two shot Derringer maybe but a 22.
Keep it in your pocket with your keys, if you’re up close and personal, jam it in their gut, shoot and that will be that.
I got the tip from a friend who carries a little Beretta. I think he’s right. ;-)