It's been done before with some NRA booths offering gas cards or something like that in LA. Seems like it was like a year or two ago. Was a huge success from what I understand. Took a ton of guns off the streets and got them into the hands of responsible gun owners. That's a good thing right? I think they were doing FFL transfers though, which the police obviously aren't doing and they were only buying working guns that were worth the gas card...lol.