06-12-2013, 10:33 PM
Nukes Wrote:Interesting and counter-intuitive. You'd think that "cutting out" metal would weaken the bolt. From that description, do I correctly infer that there is no headspace difference between those bolts? That they are freely interchangeable?
Thank God for engineers!
Bolts are the same otherwise. The failure point on AR bolts is almost always the lugs next to the extractor, because they take excessive pressure at unlocking because of the imbalance due to there not being a lug at that spot. This is exacerbated by improper timing, hot loads, or anything else that increases gas pressure. It also is exacerbated by stretched threads, improper or loose tolerances, and simple stacking of manufacturing tolerances.
You seek escape from pain. We seek the achievement of happiness. You exist for the sake of avoiding punishment. We exist for the sake of earning rewards. Threats will not make us function; fear is not our incentive. It is not death that we wish to avoid, but life that we wish to live. - John Galt