Some quick reviews I read about the 50 rounders...
If you want to spend alot of money, then wait eagerly for it to come in the mail, then it gets there and it works about as good as a HiPoint with a busted feed lip.
Don't buy
Reviewer: Dave
2/12/2010
I bought one of these and it jammed after every shot and destroyed the bullets. I was lucky and got ahold of someone at promag. They told me" you must have gotten one of the old ones send it back and we will replace. It cost me $12 to send it back and they did send me another one but I could not even get it to load more than 1 round. Tension release did not work.
50 round drum and mag tests
Reviewer: Biggest 10/22 test
2/9/2010
In a comprehensive test on new 10/22 products I have now run between 30,000 and 50,000 rounds through various products including magazines. The ProMag 50rd drum was the single worst product in all of testing. I puchased a pair to be fair. They both did not make it through one loading without malfunctioning.
DO NOT BUY
Reviewer: Karl
2/9/2010
I should have read the reviews before I bought two of these pieces of junk. One of them will not even lock into my gun unless I hold the action open, then my action will not even close. The second one goes in but the metal lip on the clip makes every round jam. Does the manufacturer even try it in a gun to make sure there product works? DO NOT BUY!!!!!!