At 17:00 -18:00 Gruzsa, is handling a flat top M16, with no scope. Several shots have a green cross hair over his target, as if he is using a scope.
The bike that Paul Walker's character uses to escape from Brian Cervier's ranch switches from a four stroke to a two stroke in the scene where it runs out of gas.
At the ranch, one of the characters refers to a horse as the progeny of Red Rum. Red Rum did not sire any offspring as he was a gelding.
You can see a member of the crew walk by inside Monk's house when Elizabeth and Monk are sitting outside of his home talking about their future plans together.