Several years ago Matt Larsen (
http://en.wikipedia.org/wiki/Matt_Larsen met with Chris Reeve and I with his idea of a combat knife with a weapon retention style sheath.
The blade is a little over 3/16 of an inch thick by about 7 inches long and made from 420HC steel.
Handles are injection molded glass filled (tough stuff) with rubber over molding for grip.
A month ago Chris spent a full day at Gerber and I watched as Chris helped the CNC blade grinder operator fine tune the curve of the grind to the front of the blade. Chris speaks CNC much better than I do.
Special thanks to Gerber's head blade grinder for getting it right and putting up with us.