I will add a brainfart I had while cleaning my Standard Operator,while cleaning the BCG checked the ejector and it took all I had to push the damn thing in.Set it on the counter and put CLP on it while working in and out.So while watching the tube with the wife figured I check ejection.Put in empty case,slingshot charging handle then tried to eject the case.The interior was cleaned and lubed but it locked up like a nun's cat.Could not pull back handle at all.Asked brother Tom what to do [he said open action and tap out case with cleaning rod so as not to fight buffer]but before I read response pulled a few more times with the upper and lower closed was able to get case to eject.Thought I would share my dumbass moment. :o