I've done that before and only once did I get a reply that seemed like the seller genuinely didn't know. I think this guy knew. My question is why did it take ebay almost 36 hours to take it down.

We won't know. Seller needs to find another way to ditch the receivers now.

I disassembled a damaged Arisaka I got from someone years ago because I could use a few of the parts. I sold the barrel and receiver to Numrich legally. They sell these things which, of course, requires a legal transfer. That's how I got rid of mine. Didn't get much but I got rid of it that way.