here's what I use.....buffing wheel & polish compound........with it you can.....
buff all internal parts.......hammer nose...ejector....lever cam....bolt slide areas......
hammer & carrier screws where they pivot.....yes...ejector silde groove in bolt...
use popsicle stick & 400 grit......do not overlook the mag tube follower....clean & polish too
along with mag tube interior....lighter main spring will help too
https://www.amazon.com/Enkay-Extra-...eywords=buffing+wheels+for+bench+grinderhttps://www.amazon.com/Woodstock-D2...mp;psc=1&refRID=095SRY8TPEDD93H7JGH7