So I am a fan of the regular G.I. aluminum mags, they have served me well, both home and abroad. But I do own some Pmags and I like them also. But latly I have heard that if your store Pmags for long periods of time without the dust cover on them, the lips will begin to spread. So has anyone seen this happen? I have always stored mine with the dust cover, but what if you list the dust cover? Could you store them loaded anymore without risk of damage to the polymer mag? Anyone with any experiance please chime in. Also if you where to choose one mag to go anywhere for an indefenite ammount of time what mag would you choose and why?