scrap AR500 steel

looking for peices that are about 1 foot square. looking for around 3/8 thick. looking to shoot them with a .223 cal rifle. let me know if you have anything laying around or somewhere that will sell me scrap

I don’t quite think people typically have AR500 sitting in their garage for no particular reason…
Not many steel distributors even stock it.

Ebay usually has some decent deals on it though.
I think it’s usually about $60-70 for a 12"x12"x3/8"

Thx. Figured nobody would but wouldn’t hurt to ask.