My old BCG ran with absolutely no problems. Sent rifle back to Sig for new BCG and Trigger, and I've put 300 rounds through it. Since then I've had 7-8 failure to eject. It's also damaging the casings. I'm using the same Magpul Gen 4 magazines that had absolutely no problems before. Has anyone else had or heard of anyone having the same problem? I'm going to run 200 more through it, and hope it works itself out. If not I'm going to call Sig. I didn't get any pictures today, but I will definitely will next trip to the range. I've even changed my cam pin to a POF Roller Cam Pin, and it didn't fix the problem. Any help would be appreciated.