[Nemo]

Because such people are *usually* thugs and punks who can't hit the broad side of a battleship. I seriously doubt either one of them ever attempted to actually use their sights, much less actually knew how to use them correctly.

Fair chance they did not know that their ARs could run out of bullets in a few seconds and they believed and had learned (wrongly) they could shoot for an hour or 2 before needing more.

Nemo