Nice, I also had an original set in about 1989, that I put on an SP1, along with an original Edgewater buffer, 601 Bolt Catch, and duck bill. In about 1990 or 1991, a so called friend talked me into lending him all the 601 stuff for his rifle for an example at an Arms Shows (he also had an SP1, and mine was registered to me under the Roberti-Roos assault rifle ban of 1990). He never returned it and dodged me after that. I gave up. We had an original green stock 601 in our SP Arms room in 1979-1981, and I actually fired it several times on range days. I have always had a thing about them....