Agree with others. Two I'm familiar with are:
http://www.gunstockduplicating.com/and
http://www.customstocksandsteel.com/Dan at Custom Stocks and Steel is running a Don Allen machine. Dan worked on the side and ran the same machine for Michael Kokolus who passed away a few years ago.
Agree, the pattern stock is what makes these things right. I watched Dan and his father duplicate a buttstock just a few weeks ago and this takes much longer then folks think to do right. Probably at least an hour or two. I've seen good and lousy duplication done and good is rather amazing.
