I just bought a DPMS Panther Lite 16 today. I got tired of waiting on my Wilson M4 Tactical. Well, I went to shoot it and after about 12 rounds it started to not load a round. It ejected the spent round, but did not reload. I was shooting PMC 55s and then put in a new mag loaded with Hornady 55s. I had to re chamber every time to get it to shoot. It would not grab the round out of the mag. I would hear a click when I pulled the trigger......then have to pull whatever you call it to chamber it. I oiled it just a little before I went out. I hope this is not a bad situation with this gun. I am an avid 1911 shooter, but have never owned or shot a AR 15. Please someone tell me what to do. I'm sure I'll hear some pros and cons about this line, but I just need info to get it running smoothly.