The shop has a main counter in the center, manned solely by Arturo Rodriguez. Behind him are several ammo boxes, a weapons duffle bag, and the door to his house. To the right is a weapons workbench which the Sole Survivor can use to modify their weapons. Depending on the time of day, the Sole Survivor can sneak in to Arturo's multi-level house, or the door may be open.
Commonwealth Weaponry is mentioned as a sponsor for Diamond City Radio.
Commonwealth Weaponry appears only in Fallout 4.