The only ones ive had experience with are Star midcaps. This review might not be legit since i got them used, but theyre decent. They dont quite hold 140 rounds. The trap door release is hard if not impossible to pull back, so i either use a flathead or take out the magwell and use that to unload. The bb pusher is short, so a round gets stuck in there, plus the 4 or so rounds in the magwell tube. Finish is just flat black, nothing special. They clamp together fine. The columns need lubing(of course) and the bottom plate moves a little bit. These feed flawlessly and Ive never had a jam or anything. Since i got this for 5 bucks each mag, i think these are worth it. But the 5 pack is 80 bucks or so in ASGI, so a better alternative is either the King Arms( these seem weird, it doesnt have a bottom plate...) and the G&P midcaps in Evike(13 bucks a mag i think). THe G&P are probably the best ones, the bb pusher goes past the trap door, possibly feeding every bb in your mag :shock: . The G&P probably has higher quality materials too.
Hope this helped.
