I am looking into getting a NFA Trust (seems like the way to go) and was looking around for some info. First I saw SilencerCo having a NFA Trust for $130. Seems like a decent deal but wondering if that's just a startup cost and a few legalities. - Does the $130 just cover setting up the trust or does it cover amendments as well? - Is the Trust through SilencerCo or is it a self sustaining private entity? By that I mean, if SilencerCo goes under, will I have to get a new trust or is it separate from that company? - I have a Mega Lower with a 16" 556 barrel currently. I want to get a 300blk 10.5" upper to use with my lower. How does that process work and do I have to fill out a Form 1 or 4? Also how would it work with a Trust? - Also if I built a 10.5" upper, can I keep it in the safe with my lower (not used or mounted of course) before my lower is registered as a SBR? - If my Mega lower is registered as a SBR can I place the 16" upper on it and sell it as a regular AR or does it have to be transferred as a SBR? Thanks in advance!