Got out to the Minnesota Machinegunners Association shoot today. I picked up an O.O. 30 round mag last week and installed a smooth mag well from the fine folks at D.S.sales... Like mentioned in another thread, some slight tweaking of the feed lips had to be done to alleviate some slight drag on the bolt....No big deal, easily taken care of. The 30 round stick fed like a champ. Put about 900 rounds throught the M50 using only that mag. The whole machine ran like a champ. 2 FTEs for the day...no FTFs..... Business as normal for this great subgun, I'm going to grab more mags from O.O. as well. Really hapy with the performance! Thought I'd let ta all know.....