Just today I spoke to Tony at Wise Lite Arms. In the course of our conversation I reminded him that there were a good number of folks still quite interested in pricing of the WLA MG42/Yugo M53 receiver and also wanting to know if "Camming sections" can be stamped out. He stated that he has not forgotten, but as of today doesn't have an answer to either question. As with all big projects there are other folks involved and he needs complete info from them in order to make an accurate quote.
So, please be patient and I'll be sure to post as soon as solid info is available.