Thanks, guys. Erich, I'll check out those links.
Meowhead, It has one 12 rd Marlin mag; at least, the baseplate says Marlin.
The recoil doesn't seem much at all, to me; just a nice push I really like. I took it out back, and set my bag up at 25 yds. After the first shot (pizza box target; they work great!), there was the hole close to center. Fired the next two shots, and only saw two holes. I figured I missed completely with the third shot. Turns out the second hole was a bit big! I loved it!
Ledbetter, I'll check into the buffer and spring; it's gonna be a ton of fun, I can tell! How do I check with Marlin?
Mikey D...