So took my new gun out shooting yesterday for the first time, it;s a palmetto lower. Can't remember the brand of the upper but the gun store said it was a good brand. It will fire the first round an eject the shell then just click. I tried both my mags(20 rd and 40rd) and it still did it. I was shooting PMC ammo.
Any ideas? The shop I bought it from isn't open til tomorrow so trying to get some ideas before I take it back there.
Thanks,
Stephen
