can't say i have used that mag. it looks to be a plastic mag?
if you want the best mag out there you can get TWO mag-pull P mags for about the price of ONE of those.
i wouldn't touch those $27 mags with a 10 foot pole. but then again i am very demanding on all things that shoot live ammo.
if your a mag collector then maybe.
if you just wand dependable mags that feed rounds why bother with these overpriced and unknown ones??