In the latest video in the Firearm Expert Reacts series, Jonathan Ferguson–a weapons expert and Keeper of Firearms & Artillery at the Royal Armouries–breaks down even more of the guns of Helldivers 2 and compares them to their potential real-life counterparts. In the latest video in the Firearm Expert Reacts series, Jonathan Ferguson–a weapons expert and Keeper of Firearms & Artillery at the Royal Armouries–breaks down even more of the guns of Helldivers 2 and compares them to their potential real-life counterparts.