Did Sinclair or Brownells sell these? Not sure of the original manufacturer. Were these a chassis style? I think they were sued by AI for patent infringemant.
Sorry for being so late to the party. Yes, it is an LOD stock designed by yours truly in Houston, Tx. My name was actually on the inside of the cover of the data book. I designed (if you want to call it that) that as well. It was designed to be ergonomically correct and reduce recoil.
I left the company in '96 so I have no idea as to it's status.