This may be old news to everyone but I just learned about it.
https://mcmillanusa.com/mccubed-generation-mcmillan-mc3/
https://mcmillanusa.com/mccubed-generation-mcmillan-mc3/
Interesting. If anyone can make the "Tupperware" better and more economical for the consumer, I believe they can.
They are already in the market.
McMillan launches new line of less expensive stocks: Grayboe – rifleshooter.com
Different stocks. The ones mentioned in the OP are McCubed polymer stocks. The Grayboe ones you are linking are not them. The Grayboe stocks are pillar bedded, whereas the McCubed polymer stocks have no mention of any sort of bedding system, just a stronger polymer stock in a A5(?) configuration
The article does say the McCubed stocks will have molded in aluminum pillars.
I also found this.......
McMillan Introduces 'Mc3' Line of Injection Molded Polymer Stocks - SHOT Show 2017 - The Truth About Guns
This may be old news to everyone but I just learned about it.
https://mcmillanusa.com/mccubed-generation-mcmillan-mc3/
Yesterday I saw a video of Kelly Mcmillan explaining/showing some features of the mc3 and had a few stocks sitting on the table that were made by others. I think I recognized one of them to be the Stocky's stock that you are referring to. It looked like it to me at least. At the end of the video Kelly stood on the middle of the stock with it being supported by the butt and forend. I could see a little flex but it did not look like it wanted to break.I would love to hear how these are doing as well.
I would really love to hear how these compare to the Stocky's stock that they sell for around $200.