I just "finished" restoring my Model 80 that I got for Christmas back about 1960. It had been held for me by my cousin for many years. Just yesterday I noticed that I had overlooked the broken "cartridge guide spring" which broke sometime in the '60's. The gun seemed to load OK, but now I wanted to replace it. So I went to the Numrich website and found that they were "out of stock", but were selling for $4.95 when they had them. This morning I Googled "Marlin Model 80 cartridge guide spring" and found them on Amazon and they were "in stock". Guess what? They were $7.95 and supplied by Numrich....... Good 'ol American Capitalism. I bought it. But at a 60% markup.