First, a great big thank you to Jay at Gallery Distribution, who helped me find some scarce SP1 parts I needed, quickly and inexpensively, through this bulletin board.
The buffer tube on my SP1 carbine has finally worn through the bottom, and appears unrepairable. These early buffer tubes are all 2-position, and the diameter is different from those of recent manufacture. Obviously, I want one that fits the nylon-covered butt. Can anyone help me locate a replacement? Just need the buffer tube, thanks.