Craig, this ProMag's 70 round drum magazine is for the Marlin 795/70 & XT-22 Series Rifles.
Loading Instructions
1. Access loading gear through cut out on back of magazine housing just below the feed tower.
2. Do not load more than one cartridge at a time. Loading one at a time ensures cartridges are loaded at the correct angle. Failure to do so can cause malfunctions in your drum magazine
3. Turn adjusting wheel with your finger counter clock wise, you will see the magazine follower at the top of the feed tower move down, now insert one cartridge into the feed tower and then release the adjusting wheel
4. Repeat step one until your drum magazine is loaded to capacity.

Model 795/70/XT-22 Marlin Firearms all use the same magazine

Craig, can't find anything that says it will fit anything other than the Marlin 795. Have a great day!

This fits the Marlin 795 and Marlin 795ss, don't believe it fits anything else. Hope this helps.