Most unnecessary R rating ever?
As far as the violence goes, there was slim to none. I think I saw a blood smear, a dude's rib cage, and a few bodies on the ground but that's about it. There was no sex other than the implied one night stand the main dude had. Also, I think there were only 3 to 4 F bombs and if they had cut it down to 1 or 2 it would have been an easy PG-13.