I always kinda thought if there's one on the planet, Numrich Guns will have it.
just order a couple from Numrich Guns looks like the correct ones i will update when it arrives. most places I have looked were sold out sooo i jumped one them.If you find some let us know. I have a P89DC 302-635xx from the same time frame. Thankfully I have 4 mags but it would be nice to have a few more.