Does anyone know what company made bolt on stripper clip guides that would allow commercial bolt action rifles to be fed with stripper clips? It was a milled piece of steel that screwed on the rear receiver bridge via the scope base mounting holes. The idea was to be able to assemble a Highpower Match rifle using a commercial sporter. I recall these were somewhat popular back in the 70s/80s. I want to say the company was Mo's (or Moe's?) but I can't remember for sure.
My father in law has one on a Savage .223, but I don't see any markings. I also seem to recall Champion's Choice selling such an item years ago, but I don't see it now.