When they are driving down the road after being released from the police station, Bobby Kalinowsky is in the back seat behind the driver. When they are stopped by the thugs, he is in the front passenger seat.
When Seth goes to his office to tell Ethan to watch over the club, Ethan's sun-glasses move position on his head from cut to cut.
When Bobby goes into his on-suite bathroom to tend to the gunshot wound, he closes the hinged door; but when he exits it is now a slide door.
In the case scene in the car park we see Rob Van Dam's character running down the stairs and the other three hiding in the jeep.
When the two bikers pass the lights are turned on in the jeep, But in the next shot they are off and only come on when they start the engine.
When Seth leaves the bathroom the bandage is on his right shoulder, when he reappears on the other side of the door in the bedroom, it is on his left shoulder.
When Trouble asks the Latino gang members if they are down for the hit on Bobby twice you can see Trouble's lips move and no sound comes out.
When Seth arrives at his compound after just having Bobby's daughter kidnapped, there is a gas container visible to the right of screen which is obviously meant to be keeping the fire lit in the 40 gallon drum.
It's insinuated that B.R was also a Navy Seal along with Bobby, especially since he calls him by his rank. Yet when B.R. is in the knife fight, he holds the knife like a civilian, not a trained combatant, every US serviceman is taught the proper way. Seals have been trained in the proper way to hold a knife during a knife fight, upside down, blade against the wrist. Stabs are done when you are retrieving your hand back to your body, slices are done when your hand is leaving your body.