Here’s the trick. Go pick up a couple of expended anti-tank rocket tubes like the LAPD are paying 200 bucks for. When they come to the door, give them to the gun Nazis and tell them about how happy you are that they came to take them off of your hands. They’ll get so excited that they’ll wet their pants and will forget all about asking about guns.
Movie props.
http://www.411toys.com/air.html