I hear criminals routinely walk around with their AR-15 stuffed down their pants when robbing and stealing ??
Oh wait, you mean a standard .223 round from an AR-15 is more deadly than a 9mm, 357 magnum, 45 caliber, etc..at close range.....
Careful, I tried to make the same point last week here and someone here argued vociferously that the AR was still more deadly because it could kill you twice as dead.
Q1: No probably not, the pistol grip and standard capacity mag make for uncomfortable in the the pants carry, never mind what else may pull out when a crisis draw is attempted.......
Q2: Yes, no, maybe, it depends.....
Certain 5.56 rounds will slice right through IIIA body armor that’s rated to stop 9mm, 45, 357.