TOP GUIDELINES OF GOLD CUP TROPHY COLT 45

Been away from the board for quite a while because of marriage, household renovations and an previous auto resto, but I'm now acquiring back into firearms and significantly the AR15 form. So I suppose which makes me an outdated semi FNG.If I'm using a non-nfa class 3 reciever, could I place inside of a "faux" sear pin on my retro Establish or would