So I went to the range this weekend to tryout my newly assembled AR-15, but ended up having a FTE issue. I had planned to sight in my EoTech, but after firing the first round, the brass casing didn't eject.
I took the BCG and charging handle out, cleaned them, and re-lubed them and tried again. Same result. After firing downrange, I have to pull back on the charging handle to eject the brass.
Again I took it all apart, and tried to inspect whether the gas tube and gas key on the BCG were lining up, and they seemed to be. But it also looked like the gas key had no residue in it, although I had only taken two shots with it, i would assume if it was lining up properly, there would be atleast a little crud back there.
I tried one last time with no luck. I took the rifle home, and completely disassembled the upper minus taking off the barrel nut and barrel. I took the gas block pin out of the gas block, inspected the holes to make sure they were lining up and inserted a new gas block pin. I made extra sure that the gas tube was lined up as straight as possible while re-tightening the hex key on the gas block as well. I haven't shot it again after the reassemble, but any thoughts as to what else it could be?
I took the BCG and charging handle out, cleaned them, and re-lubed them and tried again. Same result. After firing downrange, I have to pull back on the charging handle to eject the brass.
Again I took it all apart, and tried to inspect whether the gas tube and gas key on the BCG were lining up, and they seemed to be. But it also looked like the gas key had no residue in it, although I had only taken two shots with it, i would assume if it was lining up properly, there would be atleast a little crud back there.
I tried one last time with no luck. I took the rifle home, and completely disassembled the upper minus taking off the barrel nut and barrel. I took the gas block pin out of the gas block, inspected the holes to make sure they were lining up and inserted a new gas block pin. I made extra sure that the gas tube was lined up as straight as possible while re-tightening the hex key on the gas block as well. I haven't shot it again after the reassemble, but any thoughts as to what else it could be?