In this real steel unboxing, Brothers & Guns feature the Maxim Defense PDX 5.56. They express their excitement for the new firearm, which will be added to the collection. the initial unboxing, the rifle's key features and components like the "hate break" muzzle device and Geissele two-stage trigger, and a demonstration of how to disassemble it. They also show the accessories they plan to use, including a Sig Romeo 5 red dot sight and a LaRue 30K suppressor.