Just saying that here, with the cold weather, I doubt that the way that the lips are holding on the polymer that it will be strong enough. If you slam them to hard for a reload, may break
Time will tell. the Sig 550 series clear polymer mags that are here and used in Switzerland seem to be fine, hopefully these guys (who have a background in Advanced Polymers) can bring another choice to the market. Competition is could for consumers.




















































