NAA makes a neat little 22 short
They also make it in 22lr.
I think of them as great back-ups to a regular ccw, or a primary for a 10 minute run to the store.
They fit perfectly in the change pocket of a pair of jeans.
Mine has been useful at extended family gatherings where everyone wants to hug.
Gramps used to use the shorts through a bolt rifle to take out squirrels that tried to eat the fruit off of his trees...in the city limits
Darn thin sounded like a good pellet gun.