I bought the gun from a member here who never shot it, back in February. Here is the
thread (New SIG (lots of pics))
I have probably 600 rounds through it so far and have not done anything to the mags, such as cleaned or lubed them. I will check them for sure when I clean the gun tomorrow. I have always cleaned the gun after use, and lubed it good before putting it away. It may just be that it is still not broken-in yet. I am very leary about carrying it with the extra round in the mag until I know it is good to go. I will number both mags to see if it only happens with one mag or both. After it did not feed, I switched to the other mag, and it fired fine.
Thanks for all the tips and ideas. This is a great plase to get answers.