Factual error: The sound effect used for Mr. Kogan's Desert Eagle for the shootout in the Chinatown kitchen is WAY too quiet. It almost sounds like a silenced pistol. Any gun buff knows how loud these hand cannons really are.
Factual error: In the arcade shootout, one of the replacement killers uses a Heckler & Koch MP5K hidden in a briefcase. However, he does not use the proper technique for this weapon. You should hold the case horizontally against your chest to be able to withstand the recoil. If you just walked & fired holding the briefcase at your side, you'd probably end up shooting into your own shin.
Factual error: To provide cover, John turns on the carwash. However, it is unlike any carwash I have ever seen since it emits lots of foggy steam and no water. (00:38:00)
Factual error: During the scene when the main character is deciding not to snipe the cop in front of his children, the scope is on backward. The larger reticule is to the rear and the cap thumb release is to the front and on the wrong side. Not to mention that no self respecting sniper would chose a rifle with a CAR stock for a precision shooting. Not to mention a carry handle. Unstable long range system.
