Ok, I know Thermold aka Thermelts are supposed to suck. Be that as it may I have half a dozen of the 20 rounders and a two pairs of 10 rounders which I have been using as range mags for over a year (I like the shorter mags) and never had a problem with them. I now have access to the 30 round version at a dirt cheap price and was wondering if anyone has heard of any testing of them? These are new made in the US by Master Molder or Mold Master or something like that and not the old Canadian version. Wanna kill these ads? We can help!