I get the same blank look when I put a 5.56 cartridge on the table next to a 30-30, .308 and 30-06 asking which is the AR-15 cartridge and which are the most popular cartridges in the US for deer hunting. They inevitably pick the 30-06 as the super-killy AR round. It's even more fun if I add cartridges for my antiques, like a 577/450, to the mix. "Uh, that one actually fits a single-shot rifle made in 1874."I had a customer who was asking me gun related questions. He was not anti 2nd ,but stated he thought ARs should be banned. He had heard about their ability for auto fire. And said the bullets they use are very devastating. When I explained to him they are no different than other semis used for deer hunting and their caliber is considered too small in some stated for deer , he just stood there with a blank stare. I think he believed me and was thinking he had been duped by the media. I didnt ask because I thought I presented the truth very well and didnt want him to think I was trying to push an opinion.