That IW stuff is pretty damn pricey even before you source the metal parts. Buttplates and PG ferrules are out there, but some metal fittings like handguard ferrules are impossible to find for sale by themselves.
if anyone needs Chinese Type 56 furniture, you can still easily buy complete, finished original sets for a lot less dough.
Unless you're working with a slant-cut receiver. Then, you're stuck with IW for the butt at least.