Factual error: When the drug lord hands Malone the gun near the end to shoot the double-crosser, the hammer is cocked back. The drug lord then opens the cylinder and takes out all bullets but one. There are 2 mistakes here: 1) There are no revolvers that open up with the hammer cocked, to avoid accidental firing. They all stay locked shut until the hammer is put back down. 2) The bullet is in the wrong position to be fired next, yet it fires on the first attempt. It should be in the first position to the right (one o'clock) from the hammer.
Factual error: ML is caught by the LAPD without the diamond which was obviously never found. Fine, the site is huge and they may have thought the accomplice took it. However, its inconceivable that the insurance company and the police would not keep surveillance on him after a $17MM diamond was missing for 2 years. They should have been on him like a hawk.
Factual error: None of the police vehicles, marked or unmarked, have a steady red light to the front, as required on ALL emergency vehicles in California, but not required in any other US state.
Factual error: The scene where you see the Mexican officials coming down the dirt road, you can see the stop sign in English when they are in Mexico. It should say Alto.
Factual error: The truck at the end wouldn't get as far as it does (about 1.5 miles to 2 miles) with four flat tires and having hit all the stuff it did. Including police cars, road blocks and 4x4's.
Answer: The P-30s they were discussing were the department-issued guns the cops had. They were complaining that they were not good to use and since Logan was lead detective, they made him decide what to do with the issue.