Not yet. I am thinking of just getting a kiln and doing it myself since I am going to be building a few of these into rifles.

http://www.clay-king.com/kilns/paragon_kilns/paragon_pkm9d.html

Thanks for the heads up Harlan
Im always a day late and a dollar short,I just need save and order 3-4 NDS-1s from you guys when there back in stock

I like the idea of using the shells but I didnt really want to buy a spot welder and special tongs (not that I dont want one) so the rails and heat treating were the big cons for me.
I suppose if I could get these already heat treated I would buy the spot welder and try them,just not sounding like there worth the extra work for me