North American Arms PUG Stainless .22 Mag 1" Barrel 5-Rounds - $329.57

I certainly don't think that someone could take a round to the chest as you say but I do know, and is easily fact checked online is the fact that a .22 round coming out of this tiny 1" barrel DOES NOT gain enough energy and velocity to be a viable, lethal, self defense pistol. The small barrel has been proven to cause accuracy and keyholing issues. Even if this was a viable round, the size, design and capacity do not make it a good choice as a self defense pistol. It is hard enough to get on target under extreme stress, anxiety and fear with a standard semi auto pistol, let alone fumbling around trying to get on target with this gun.Then being able make what would take miraculous shots to completely stop an attacker. It is rare that a suspect is completely dropped and killed with a single self defense shot of a higher caliber round like a 9mm. Most time it takes several rounds to completely stop the attacker. Heaven forbid you are being attacked by multiple people. Good luck stopping them with 5 under powered .22mag rounds out of this pistol. Especially if the distances are over 5 meters..
I am not saying that these don't have some value to certain folks. Is it better than nothing? Sure, is it highly concealable? Sure. Would it make a good "last stand" backup pistol like in an ankle holster and for using point blank? Sure. Could just someone pulling the gun on a threat cause then to think twice? Ok...
I make no qualms about my opinion and experience as a firearms instructor.
The main issue I have above everything thing else, good or bad, is companies marketing these as "Self defense" pistols.
I am not trying to sway anyone for buying this gun. It's America and everyone has their choice to do so as well as to disagree or have a different opinion.

Yeah anyone who is not acknowledging the fact this particular model is just a conversation piece over a real, useable self defense weapon. A .22 mag round out of these super short barrels simply fall on their face when fired. Plenty of videos out there showing the keyholing issues along with an absolute lack of accuracy and speed. At best, brandishing the pistol at an attacker MIGHT scare them away. Or they will just laugh at you? Lol.
All jokes aside though these are just unsafe, unwieldy and inaccurate revolvers. There is very few niche markets that might make use of this revolver. And this is only achieved because it holds 5 rounds.