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Message: <blockquote data-quote="Jason Freeland" data-source="post: 4298819" data-attributes="member: 45827">[ATTACH=full]495178[/ATTACH]This weekends test ammo has arrived.  I changed the buffer to an H2 weight, cleaned and lubed the AR and will try both 77 grain AAC rounds again also.  Hopefully this will do the trick and let me fire off more than one mag without the thing stovepiping when it heats up.  If it still won't work, I'll have to have a gunsmith look at the gas system and make sure it was assembled correctly.  I haven't the faintest idea how it should look, so I'll let the professionals do it.</blockquote>