The final stunt shows the main character falling out of a helicopter holding a ruggedized digital storage device used in digital movie production. While he is falling through the air you can see that he is not holding anything. When he lands on the air cushion he is holding the storage device again.
During the garbage truck chase, Colt is sprayed with windshield glass before it is actually shattered in the next scene.
When Gail and Colt are in her trailer early in the movie, she has her nails done. After that, they are short and a different color.
Colt before the garbage truck fight, took with him the dog without any leash.
After he was running in the streets with the dog in a leash.
In the bar when Ryan Gosling sticks his hand in the cocktail glass, the level on the cocktail changes between the first shot and the reverse angle.
During the apartment fight, Colt is shot at close range with a pistol loaded with blanks without any damage. While they don't fire a projectile, blanks are still dangerous and are known to kill at up to six feet.
While shooting on the beach, the pyrotechnicians make several egregious errors that would get them kicked off set, never work in the industry again, and possibly arrested. First, the director Jody specifically says to stop yet they continue. Second, there are no warnings to the nearby crew that they will be going off. As people have actually died on set, most infamously on Twilight Zone: The Movie (1983), this would never happen.
The Mexican restaurant's name is "El Cacatúa del Capitan," but in correct Spanish, it should be "La Cacatúa del Capitán."
Colt says that his first stuntman job was jumping a speedboat for Universal Studios' Miami Vice (1984) stunt show. The only watercraft jumps involved in that attraction used Jet Skis rather than speedboats.
The GMC Sierra used in the movie is a Left Hand Drive vehicle. As per New South Wales law, all Left Hand Drive vehicles must either be converted to Right Hand Drive, or to have a "Left Hand Drive" sticker placed on the rear of the vehicle, neither was seen.
In the garbage truck chase scene the chase moves quickly from the Sydney Harbour Tunnel to the Sydney Harbour Bridge but in reality there is no direct road linking the two and you would have to drive through North Sydney and U turn back towards the city.
In the truck chase with the dog, there's a 7-digit, local American phone number on the truck, omitting the area code. But the film is set in Australia, where local phone numbers have 8 digits and are formatted differently.
The skip truck sequence clearly starts under the Sydney Harbour Bridge on the west side, in the area known as The Rocks. Later on, an aerial shot shows the truck, towing Seavers (Ryan Gosling), on the bridge, with the Sydney Opera House in the distance, meaning the truck is coming from the east side of Sydney, not the west.
In a brief shot where Colt hangs on to the back of the Skip Bin over the Sydney Harbour Bridge, the Ford Fiesta seen is of a United States variant. Australian Fiestas were sold as the European variant.
At the end of the movie, when attempting to escape in the helicopter with the recording, Tom and Gail could have simply destroyed it.
When he's tied up, Colt says that the phone was shot out of his hand when he was "by the doorway", but actually he was hiding under the stairs.
Everyone calls the film "Metalstorm", and "Metalstorm" is title shown at the end on the inflatable stunt pad and in the Comic-Con scene. But previously when Jody is seen reviewing film clips, the promotional art has the title as "The Metalstorm".