Very disappointed in this weapon. Arthritis brought me here but now I hate it more than before. New out of the box, the grip safety hung up so back to the factory. 4 weeks go by and I go to the range to qualify for Enhanced Carry permit. Between the two magazines, I didn't keep track of which mag was causing the problem, but failure to feed the last round, stovepipe, and failure to leave breach open after firing the last round. They will send parts for the mags and I will go back to the range to see if it is a particular mag. I am firing Sig Sauer 100 grain FMJ. Did I say I was "very disappointed"?