Are we talking about movies with an anti-gun message or alleged anti-gun actors in gun use movies?
The Brave One was as close to a pro gun message as I've seen by an anti-gun actor (Jodi Foster)
Planet of the Apes (Mark Wahlburg one)- the scene with Charleton Heston, as an Ape-man, emphasizes the evils of the gun, one of which he has hidden in a vase or something.
It's movies, either it entertains you or it doesn't.