who is this namefag "A2" I keep hearing about

I wasnt on this board for over a year, then I come back (as one always does) and all I see is "is such and such A2 approved" or "what kind of optic is A2 approved" and it never ends

Nobody thinks for themselves, /arg/ has become a hivemind of this A2 nigger, you cant post anything without somebody saying "hurr durrr oh that trigger guard isnt A2 approved your NGMI"

the worst part is that when people ask if something is "A2 approved" somebody will respond and tell them, but since this is an anonymous anime image board you have no idea if its even the real A2, im beginning to think that A2 doesn't even exist, and if he does people are putting words in his mouth

who is this nigger and why should I listen to him, all I have been told is that he is some sort of special occupation taxpayer from san francisco or idaho or some shit who tests gun accesories