>>64461429
You fucking realize that the only thing PSA makes on that specific upper is the barrel you mouthbreathing, dribbling, retard?
>>64461443
Yeah? And I have a PSA upper that has no fucking problems, a DD upper that didn't have problems, and a BCM upper that did. Clearly PSA is as good as DD because you made no claims what so ever other than you had problems with an upper that PSA only makes the barrel of.
And nobody cares you committed a fucking felony with the lower shit for brains. Thats an old Colt LE6920 lower that Colt only ever sold as a complete rifle, judging by the cupped shelves on the safety and M4 style blending around the front pin. They did register some as SBRs, but seeing as you have a pistol brace on there, its still a felony, and no dealer would ever take one apart and try and sell one as a stripped lower.
>>64461504
The firing pins which you can warranty without issue on account of the fact that PSA openly admitted they got a bad batch years ago that were improperly heat treated and machined? Nigger, you're openly admitting you owned a safe queen for years and only just realized had a problem when you took it out to the range for the very first time since buying it. And again, outing yourself as a retard for byying a fucking Russian optic of all things.
>>64461634
Yes, yes in fact I dobecause 4140 is a METAL COMPOSITION SPECIFICATION detailing the exact aalow requirements in order for that stocm to be identified as fucking 41 fucking 40. Its not some magical fucking number you stupid cunt.
>4
Means its a molybdenum alloy steel
>1
Means has a specific amount of chromium alloyed
>40
Is a specific carbon and impurities designation assigned by the fucking ASME, which you'd know if you weren't some mouth breathing retard larping as an Engineer, because meth and prescription pain meds oblitterated any semblace of not being a mouth breathing faggot.
And steel alloy has nothing to do with zinc plating, holy fuck. Wear your O2 mask.