The Remington Models 8 and 81 also had clip guides, but use special clips that are rare as hen's teeth and even more expensive.
Mike the really rare and hard to get ones are the 25,30,32 that are brass. The 35 and 300 are a bit easier to get but still rare in brass, the steel ones not too bad. I have a few for my 35 and here's the cool part. Remington actually sent 1 with the rifle back in the good old days.