How did you notice it was broken?
What's the metal look like where the lug broke?
Why do you think it broke?
Did it break on lockup, or unlock?
How's everything else look?
How many rounds did you put through it AFTER you discovered it was broken?
How did you run that thing for carbine class without Sully making you clean it?
Did you take it apart. look at it, and put it back together dirty?
I found the broken peice when I pulled the trigger and it didn't go bang. The broken lug section had wedged itself between the bolt and the receiver, stopping the bolt from engaging the barrel lugs. I cleared the weapon, and the peice fell into teh grass, never to be found again. i wasn't sure what it was at first, but then I saw a clean spot in the weapon, and that's how I found the lug broken off
. After that, I fired off the rest of the mag, and figured I'd stop before I blew myself up. As for when I pulled it apart at the class.. I looked at it, said, wow, there's a bunch of plastic goo on it, and threw it back in.
Oh, and when the case sticks in the chamber, and you drive it out taking all the chamber goo with it , isn't that like cleaning the chamber?