i like the vid explains the basics pretty good but two things.
shot peening only hardens the very top few layers of steel molecules. this makes a part many many times more durable. a must have if your going to shoot a lot of rounds. a non shot peened bolt will pit and wear out a lot faster nearly ten times faster than one thats been shot peened. the cost of a bolt that has been peened is cheaper than buying just one replacement when the nonpeened wears out
any lower receiver will accept a milspec or commercial buffer tube. the type of tube does not affect receiver strength. only affects how easy it is to crush the tube itself. milspec diameter is a slight bit more rugged.
so if you choose to go a cheaper route its wise when you build yours up to invest in a very good carrier. it IS the heart of the firearm. a stock dpms will go from meh to good just changing that crappy bcg to a bcm or colt bcg
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." — L. Neil Smith
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Last edited by JonM; 06-02-2012 at 04:30 AM.