I rebarreled an AR for the first time last night.  I just got back from shooting it and it worked, yay!  I was nervous as hell pulling that trigger for the first time, it didnt help that the first round was a dud  Thought I did something seriously wrong!  Funny, out of the thousands upon thousands or rounds I've shot out of an AR I've never got one with a bad primer until the first round i try to shoot out of a rebarreled AR., Go figure.