Factual error: Throughout the training (sniper) and other times during the movie, shooters react like the rifle has a heavy kick, which they don't.
Movie Medic
11th Jul 2020
American Sniper (2014)
7th Feb 2020
American Sniper (2014)
Character mistake: When Chris joins the Marine unit they are going to breach a door. Chris removes his shooting hand from his weapon to signal the breacher. He would have used his support hand.