Besides, 9mm and .22lr are very different things. .22lr is one of the very weakest ballistic threats. 9mm has much more mass, usually more velocity, and a much higher (~3x higher) average KE load.
Yeah of course I can't find it now, there was some lame Youtuber memelord that let his buddy shoot at it with a handgun and at least one bullet went through. But I also see that it can resist it, so IDK and retract my statement.
I do know the difference between the calibers though, having shot a few different weapons in different calibers (as a hobby & in the military)
