About 22 minutes into the film, the pitcher of beer that Parker is filling at the bar changes as she's walking back to her table. The layer of beer foam changes between scenes.
At the end of the movie, Spider fills up Parker's fuel tank. He then gets back in her truck, they talk for a minute, and then drive off without paying.
Speaking of the stolen truck, Parker tells Mike that there's a machine gun in there. Parker is special forces and would know that an M4 is a rifle, not a machine gun. Only someone who doesn't know one weapon from another would say something like that.