I have some but they weren’t cheap, bought from 44mag. They’re NHMTG 20’s.
If I remember right they were $18 and change each, bought them for competition shooting. I’d sell you a few for what I paid for them, really don’t want to take a loss. Think I’ve got 10 left, also have some 10 and 5 rounders That would be less. send me a pm if you’d like a few. I’m also looking for Ar parts so I’d be open to trade also, could really use a stripped A3 upper.