The Russian stuff was the only box on the shelf. I doubt that ammo would have any influence on a mag release, but I am NOT a gunsmith by any means...
I will call tomorrow and see what they will do. I am not worried about them fixing it, but more concerned if it will do it again ... next time may be in a gunfight ... and if I have reload and it breaks again, that could be an issue. Remember Cops worry about little details such as that
The SR feels good in the hand, the trigger feels quick and breaks clean like a moderate 1911, so I am looking forward to being able to sort out the good and the bad when it works a little longer...