I attempted to watch "The Replacement Killers" a couple of days ago and was amazed at the lack of firearm knowledge being displayed in an action movie. The lead character was going to attempt a sniper style assassination using what appeared to be an AR platform chambered in 9mm. I don't claim to be an expert, but if you're a professional killer, wouldn't you choose a better platform than the AR for distance work, as well as a round other than 9mm? Seems like any gun wrangler worth his salt could have advised them as to how little sense this setup made.
Swoop