Ok so no more movies with guns. I could care less, I find the obsession with firearms and more specifically military style firearms, in this culture rather infantile. I'm just in this thread to point out that hollywood actors are firing live rounds at each other, something I "assumed" even a monkey intrinsically knew. But as to your point they get preferential treatment I don't see it. If we as a society tell hollywood we don't want to see people on screen running around with large machine guns, the kind we can't own ourselves, hey I got no problem with that whatsoever. But to make the claim that they are "techically" breaking laws with their shoots is a "vast" stretch. These shoots are highly regulated highly controlled environments. "Especially" where there's shooting involved and sometimes some explosions going off.
I frankly don't understand why they need to run around with "real" guns anyway. Look at the machine guns from aliens, they weren't real in actuality but you could fool anyone that watched the finish product. So if they can make futuristic or alien weaponry come off as real when they're just plastic molds...what's the issue in the first place?