u/Important_Lab9366

Got a new 5.56 11.5 complete upper on sale awhile ago and just got around to messing with it. I loaded a mag as was just gonna see how it would cycle. dropped the bolt and it went home a little sluggish but it went. Went to go eject the round and I almost hit myself in the face because the charging handle was so stuck. Ended up having to mortar that round out and had to really force ejection on the next 5. Only thing that has been changed is I put a toolcrsft bcg in it and thats it. What might be the problem?