Originally Posted by eastby
Thanks very much for the superb info, gentlemen, and thanks for correcting my confusion concerning MIM vs forged parts. Still a little puzzled why the gas key on a PSA M16 BCG is [apparently] made of a softer steel than the carrier. Must all come down to dollars and cents -- as Jon mentioned -- and what constitutes "acceptable" quality of the key while still technically meeting the MILSPEC requirements for the carrier and bolt.
the keys dont need to be made of super hard material since they arent hitting anything. the psa issues some people are experiencing may be isolated o a bad run of a select few parts. it does happen to all companies.
whats really important is how is psa handling any carrier key failure?? if they are fixing the issue in a timely responsive fashion i wouldnt be concerned and still consider psa top notch
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