Again, the contractor dude, who's leitner-wise i fired, said it ran like a sewing machine, in Afghanistan, with periods of non lube. that is what I'm all about.
Also about improving the AR; Mr. Sullivan of ar fame said three improvements are still needed , and easy to do , yet no one does them, because congress needs a fire lit under their asses.
1- an internal gas regulator in the tube, so that when the corners of the gasblock get rounded and smoothed , as the gas passes the corners of the years, the internal regulator never lets the rate of fire increase, no matter what.
2- go back to the origional powder for the case; burns cleaner and less hot.
3- longer channel area for the cam pin to travel- this will aid in extraction, keep down rate of fire, lock and unlock the bolt under less stress, and more positive,
, helps keep much better timing for all moving parts, just better all the way around.
Again, this is not me talking, but one of the origional armalite designers.