Two of the criminals in the episode were identified by the eye injuries they sustained from the sight of the RPG they fired. The RPG-7, however, is designed to be recoilless; it is unlikely that even an inexperienced user would sustain serious injuries, such as those depicted on Darryl Morgan, by firing the weapon.
In seeking information on a vehicle sales decal whose VIN number was seared onto the window from an RPG blast, Eric Delko mentions that VIN numbers have 16 characters on them, which is wrong. Since 1981, all vehicles sold in the United States and Canada are required to have VIN numbers that are 17 characters in length - no more, no less. Prior to 1981, manufacturers were free to use as many characters as they saw fit. His other information on the number 1 meaning US built, and the F meaning Ford, was correct.
During the search you hear the call sign of the helicopter as 6523. Not only is this incorrect, as the call sign would be "Rescue 6523", but it is also not the tail number of the helicopter used. You can clearly see that the tail number is 6584.
Delko and a female tech are in a lab, checking the label from a car. The tech tells Delko that one of the digits from the label is the letter F. Letters aren't digits. Only numbers are digits.