Gentlemen:
I don't have a web site, but I reckon if I am going to continue in this direction I had best get one set up. In the mean time I can be reached at the email address listed in my profile. It is gfewless@tds.net. I lurk on this board as well, visiting frequently.
I'll have a look at the grip caps. I assume you are looking for a skeleton cap that compliments the butt plate. Are there any particular features you would want on the cap? Do you have any feel for ballpark ratio of butt plates to caps? I would expect that the numbers would be quite small. It is possible that they could be completely machined, avoiding the cost of building a die.
Glenn