Want to Buy WTB East German Pebble Set, Night Sights, Bayonet, Sling/AKBuilder KBK 16" Barrel

I'm looking to buy an East German Pebble stock set, must have all four pieces and hardware. I'm also interested in East German night sights, East German Bayonet, and an East German sling, so long as it's that bluish color. CashApp preferred, please make an offer on this stuff, I know a lot of it really varies in price, I'd also like to buy all the East German stuff from a single source, but I doubt that'll happen. I'm also looking for a barrel for a Polish KBK GN60, but that's a longshot.