Thank you for your comments.
We have been asked many times about the PAP Yugo angle cut receiver. Our answer is that our M70 stocks will fit the PAP, but will not have the full support of the rear of the receiver, due to the portion cut off on PAP model. I have suggested that customers have the rear welded up with a filler piece, thus creating the original M70 correct receiver cut. We could do an angle cut M70 stock, but there would still be no support for the bottom fo the stock. I have seen a few of my customers go ahead and mount the std. M70 stock to the PAP, but have not had any feedback whether the stock is loosening up after firing.
I am not 100% sure if the set in the pic you posted was ours, The recoil pad used is not the same as ours, but, a customer could have installed a different model.
Hope this info helps.