What, are you kidding?
To Joe Average, a Kel-Tec is a "Glock".
To Joe Average, there are only four guns:
1. Hunting Rifle (Anything without a pistol grip or removable magazine. Some may call them all "Twenty-two", some may call them all "shotgun".)
2. Ay Kay 47 (Anything with a pistol grip and/or removable magazine, they're all fully automatic to them.)
3. Glock (Any semi-automatic pistol.)
4. Forty Four Magnum (Possibly "Smith and Wesson", aka: revolver.)
Joe-Watches-Slightly-More-Movies Average *MIGHT* add "Uzi" or "Mack ten" to that list. (Older will call 'em Uzi, younger will call 'em Mack ten. Any pistol with a removable magazine that goes in front of the trigger, again, they're all fully automatic to them.)
Show them something different (PS-90, Calico,) and they'll probably think it's a "Sci-Fi ray-gun toy".