I find my PM9 very reliable once it made it through the break in period. When I got mine (its now a few years old) it had a fairly weak spring which made it not come to full battery fairly often. One telephone call to Kahr and a new, stiffer spring with all the hardware along with two new stiffer magazine springs were on their way with no required return shipping or charges of any kind. This resolved all the problems and I can say that their customer service was great, especially since I have not needed it since.