It's not about being realistic. It's about being remembered when thoughts of buying a gun come to mind. The commercial is just to get people in the doors of the store. If it gives them a laugh or a grin, then so much the better. A lot of the people in Bakersfield, where the store is, would not have a problem with someone being armed with a full auto combat rifle, and would think that the dirt bag portrayed was getting what he deserved. The kooks in California only infest the area near the coast.