My 1st AR was an Anderson (cough, cough) 16 in carbine gassed. I knew nothing about these guns but did notice it ejected to the rear. Various factory ammo and various reloads of different components and powder charges. 6 or 800 or so rounds in, I sent a pic of dinged up cam pin to one who knows. He said he had cam pins with 4,000 rounds that didn't look as bad. Installed the advised adjustable gas block. When tuning from closed setting, if brass cleared the receiver, it went to 4:00. Later, I replaced extractor/spring and now observe the pie chart. Don't know if it really means anything or if it's simply a miniscule event in the annals of history....
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