Totally new one on me today - was told by a large online retailer that they could not ship me (my FFL) a common handgun because it was "on NY's banned list" because the melting temperature of the receiver was below 800 degrees. They also yelled at me a bit for placing an illegal order, and when I told them to send the damn thing anyway kept reiterating that I was going to pay all sorts of restocking fees.
I said, "I'm sorry, but I think you have us confused with California or some other state" whereupon they insisted that I was doing something illegal and while they 'appreciated' my comments, I was most certainly wrong.
I also ordered a handgun with 17rd mags, assuming the FFL would just keep them because the 10 round package was listed as out of stock. To my surprise, the online retailer offered to take the mags out before sending, when I asked if that would result in a discount, they said "we don't give discounts because you placed an illegal order." They then determined that they in fact had the 10rd package in stock, swapped it out and price matched it (it was more expensive for some reason).
What a cluster.