Possibly, could even be an Airsoft bb/pellet gun. Whatever it is, it will definitely be enough to keep the average person from trying to approach them while they, “work”.
This is the normal formation when they’re out and about stealing cars/catalytic converters.
Getaway/tail car, two armed individuals will “clear” the area, one will then stand lookout while the other works on stealing the car/catalytic converter and then they all leave together.
With this being a hemi Mopar, the car will likely end up in anyone of the, Midwest states. They’ll pull everything from the car and then a unregistered/unmarked tow truck will drop the stripped body in an industrial complex or ghetto to be found by whomever….wash, rinse, repeat; they always repeat.
For as much crime stems directly from Chicago, it’s interesting how much of the crime, particularly in newer Mopar thefts, is actually coming from people driving to Chicago from, Wisconsin, Indiana, Ohio and Michigan.