All the ICS Mp5s will have some sort of magazine wobble problem. It may not be as bad with Star low caps though since they are plastic. The heavier the magazine the more appearent the wobble.
OK on to your Q:
There's 4-5 Manual Winding Drum/Box mags. .I'm gonna assume that's not what you were looking for, but if you are look for the these manufacturers: CAW MosMag, TOP. The TOP version is made out of sheet metal. It makes alot of noise when loaded with bb's. All High cap mags will have this prob, but some aren't as noisy as others. Some of these you need to cannibalize a real TM high capapcity magzine.
yea i was gonna buy the mosmag lastnight but its not electric so i passed and baught the hero high cap instead. I was kinda iffi about it cause its looks an awful lot like the UTG high cap, and that thing miss fired like crazy. It sucks how all the savage drum and box mags are all for the larger assult rifles. And all the SMGs have high caps and lower count drums . anyway thanks for the info.