Looks like Sampson manufacturing is going to start making Mini-14 folding stocks using Ruger's own castings and sourcing the wood stocks from Ruger too. The only difference is the pistol grip, which will be made from different material and the way the tube is assembled. One part will be epoxied rather than pinned and welded.
Here's a Gun Talk video of the rep with a prototype. It looks first rate.
After watching the video, I called Sampson and spoke with their sales staff about this project. I told them that the folding stock versions all had a different lower gas block with the swivel on the side, not the bottom.
I suggested that they consider also making a side swivel mounted lower gas block and offer it as an option. The salesman I spoke with was not on the team developing the stock, however, he thought it was a good idea and was composing an email to that team with my suggestion as we spoke.
Maybe we'll see a gas block lower with the swivel on the side in the future too.