sigma I call them Stink-ma! A student of mine started class with one. Had to send it back to smith when it locked up on the range! He had bought the gun new and shot two boxes of 50 throught it! I told him in class it was a POS and to sell it and get a Glock 32 with 3 mags new in the box for less than $430.00 with taxes. He is now saving his money to get a Glock! smith soaked him $167.00 to fix it and return it to him! This is for a $279.00 POS gun. Well smith you just did a great job on a poor Security Officer. I hope you are proud! He is going to be great unpaid advertisement for you freaks Now you know why I call them Stink-ma's and do not recomend them to my students.