i have a pro mag 50 round drum for 10/22.
they only work with round nose bullets.
have a few 10/22's 1 don't like it and another
it works but still chokes on a few rounds sometimes.
i don't use it anymore feels bulky on a 10/22.
got it when they first came out for $75 i think.
guess that's about all. promag-50.jpg
Lruss