Originally Posted by
dmcmanus
Thanks guys.
One thing I forgot to add was that when we finally ejected the last casing, the lip was destroyed from the extractor. I have yet to take it apart as I am in the middle of another project today, but from what I have read on here I am thinking it was the ammo.
Also I forgot to mention that it was impossible to pull the charging handle on the first two until we let the gun cool down a bit. On the last it was possible to pull it but difficult. then it was easy (assuming this is because we ripped started to damage the lip on the round).