he was parroting the "M16A3 ISN'T A GOOD GUN EVEN THOUGH I'VE LITERALLY NEVER FIRED A GUN IRL" argument
that deserves a condescending response
I've shot one, plastic pieces of stuff, I jammed it three times, it might not have been cleaned properly or something, or the ammo wasn't quality, but judging by the history of the thing and what I've heard about it from my uncle, it sucks.