This is the thicker, meatier, beefcakes predecessor version of the Kingman striker buffer #26A. It's extremely doubtful you'll find this part anywhere else but SPPS. You'll need this buffer so the striker doesn't knock the back cap off your Spyder. It buffers the recoil of your marker which prevents that continual jarring motion when shooting it. A very important piece of the internal assembly of your Spyder indeed.
This is a replacement for Kingman part #26 in your manual.
