I have one of the "original" mid 2010 PAPs ... They are the 1.5mm RPK stamped receiver with unfortunately the plastic furniture (I THOUGHT I was getting the beautiful teak wooden furniture with a great thumbhole stock and a nice forend too)... and have searched for over 3 years now. WAY before the PAP became a common gun with the Century models and high-capacity conversions etc. etc.
This stupid $#*#@*%$&&!! trunion /rear of the receiver is like absolutely one of a $*#**!$)^$ kind and you just can't find anything to replace the furniture with. It sucks lemons. I actually contacted Zastava Arms, was contacted back by the directors office, and told they had no problem sending me a set of furniture since I was under the impression I was getting it and it was a present for my dad and there was no more in USA and at the time, the miami based EAA distributors literally cursed at me on the phone ("What the F*)@ dont you understand??? There is no more. You're not F2$(#(@ing getting wood. So stop f*#(@*ing calling and bothering us).
They said the would be in contact with me in the next few weeks to get my info. This was early fall or late summer 2010.
Never again heard from them, have sent about 2 emails a year since, never a peep.
And still wears the stupid plastic furniture.