they use pretty decent barrels i dont think they mp inspect and i dont think the bolts are peened. what testing they do is liekly batch tested at best.
great range guns dont expect it to run hard and hot and keep doing that without upgrading the bcg.
for the price range they are in they are a great choice.
"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
The problem with being stupid is you cannot simply decide to stop doing dumb things...