According to the alarm clock in Dave's home, he and Brody leave for the SRT training facility shortly after 9:00 pm. Later the same night during the raid, Korver reads a text on his phone which shows a time of 8:47 pm. Worse still, the text header indicates it was sent at 7:39 pm (68 minutes earlier), but the text message refers to something that had just happened inside the facility a moment earlier.
During preparation before the assault, Dominic Purcell and Cody Hackman are seen holding a short barreled rifle, presumably an M4. The Eotech sight mounted on the rifle is mounted backwards.
At approximately 37.30mins, Brody is walking past a sign with the word baracks. He actually stops and looks at it. Unless they are referring to the American president the correct spelling is barracks.
inside the armory (30mm) of the training facility, on one of the 3 m4 guns on the wall, the eotech - an holographic aiming device on top of the gun - is mounted back to front. It visible again when David is loading the gun (1h28).
The same device on the gun of one of the mercenaries is actually mounted correctly.
Judging from a shot of Dave's smartphone, the story takes place in July of 2014, but both Dave and Scott drive vehicles with outdated license plate styles. Dave's style dates from 1980-86, and Scott's is from around 2003. Neither car appears eligible for a historical or vintage license plate, and neither plate number begins with the necessary letter for such designated collectors' plates.
At approximately 37.30mins, Brody is walking past a sign with the word baracks. He actually stops and looks at it. Unless they are referring to the current American president the correct spelling is barracks.
The news ticker you can see during the news in the beginning of the movie is padded with ridiculous headlines about a guy being arrested after asking the cops to arrest him, about doctors advising that drinking water cures dehydration, and about a calendar expert who states that a year has 365 days.
After Korver is told there is "carnage" and views the security cameras to see inside, he looks at eye level cameras facing Scott and Jason. There are no eye-level cameras in the facility and no cameras are being worn with Korver's infiltrators so this footage cannot exist.
Shortly after the SRT training facility is ambushed for the first time, Hendrix goes to the main entrance and closes the steel sliding door and secures it by closing two horizontal sliding bolt locks. However, sliding bolt locks mounted in this position will not secure a sliding door at all.
The volume of *items* retrieved from the locker and the box they were in would not have fitted in the size of locker that was opened.