I take it you mean the old Rigids from Santee, Ca.(1960's)R9 model (big as in really big)lockback, folder with heavy brass bolsters,walnut scales (w/finger cutouts) and a large clip point (440c?) blade. Similar model but had a drop point. Of interest is Rc dot on the blade. Also made fixed blades and smaller folders one being linerless,lockback and a micarta frame. Excellent using knives. Moved to Arkansas in the '70's and went out of business. Name picked up 5-6 years ago and now standard fare from SMKW in delrin and 440A but not in the old designs which were unique. SMKW offered the big drop point folder 8-10 years made by some bubba in his garage from old Rigid parts. The original has more rounded walnut scales and some of the reworks had excessive play in the blades. Original guy worked for Buck in El Cajon,Ca. (check posts in the Buck forum recently posted) That'
s all I know. I have 5 folders and fixed blades I picked up at gunshows for $25-$30 each. As I said excellent heavy duty using knives from the old school. Good Luck Weldonk