honestly I barely remember posting a pic of the gun but if its a green thumbhole it is a Richards microfit, called a tacdriver. they are simi finished and they use that loosely. I spent over 20 hours on that stock.
the gun has just been put up for sale if you are interested. I cut the barrel down to 24" and had it threaded for a brake. it has a flush fitting cap that blends nicely.
if you might be interested let me know and i will send the specs and price.
I build smokeless guns and this was my first. It has been my baby for a few years but I now have others and I am currently building a .416 so this one needs to go