Fits Marlin model 780/25 guns. Also fits models 80C,80DL,80E, glenfield models 20, 25 and 80G, JC Higgins models 42 and 42DL, Foremost model 20 and revelation model 105. This is a new magazine with no packaging. Note, the magazine will need to be modified if it is going in an old model 80 (or equivalent). I can walk you through this process, but I need you to order from the $44.99 listing I have (it takes extra time for me to provide my knowledge, hand select a magazine, they are getting harder to find candidates, and I guarantee success). Please let me know that you want to do this in the notes to the seller. There are slight manufacturing differences that may prevent it from working if I don't hand pick the magazine. If tinkering isn't your thing, I sell the premodified, tested, and ready to go version for $54.99. Just click on seller's other items to find the listing