I will say again f@$k production and it's anal rules.
I am sure if you gave a trigger mech to a decent gunsmith and he just removed the high and low points of a part in order to debur and fit, he wouldn't last long in the game.
A competent and proper trigger job requires polishing.
If the trigger is within the DA/SA break weights and is safe, who the fuck cares. No one will ever detail strip your gun at a shoot.
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