I had a NAA 22LR years ago. It loses so much velocity from the short barrel that I actually had bullets bounce back at me.
I finally sold it when I shot a Copperhead 5 times with snake shot and the snake still kept going.
Recently I heard of a man that was attacked and beaten by two thugs. The man couldn't get his carry gun out from under his coat as he was beat to the ground. While he was down he did manage to get his NAA 22 Mag out of his pocket and shot one attacker in the side. The attackers ran off. The bullet penetrated pretty far and the attackers were caught. I don't remember if the thug lived or not. I hope not.
So, it's the same old story, The little gun you have in your hand beats the heck out of the gun you can't get to.
I have a NAA 22 mag on order now.
I have all the small pocket guns, Kel Tec, Ruger LCP, Micro Desert Eagle, etc, but I suspect, like years ago, I'll have the NAA on me all the time.