Interesting. If you don't mind could you send me a PM and let me know how you did this? I am in the same boat.
I will PM you, but I will also give a short explanation now in case others are curious.
Initially, I setup the trust for NFA items. The federal laws changed so they are a little less attractive, but in my situation this is still worthwhile. I assigned everything firearms related to the trust. I already added one nephew and will add the other two this spring.
When I pass away, they'll control the trust. In time, they can add their sons and daughters (they already have 6 combined) and so on. Because all the NFA items were transferred to the trust initially, and all the other firearms later, the trust owns them. So there are no additional transfer fees, nor any inheritance tax. When my nephew's son (currently 8) has grandkids or great-grandkids, he can add them as a trustees to the same trust, 100 years after I am dead and gone.
I've added the most items to the "collection," but there are guns from my grandfather and my great-grandfather too. Nothing has to be divided up, everything stays in the family. I plan to add two restrictions when I add the other nephews: 1) a majority have to agree to selling any item, 2) other trustees/family have "right of first refusal" for any item the majority agree to sell. While I am alive, I have total control, but I need to set things up properly for the future to protect everyone.
This is for Texas, I have no idea what rules prevail in other states.
The outfit I used to set it up is
Willi Law Firm, P.C.
The cost includes him defending the trust (although I doubt my great-great-great grand nephew can count on that).
I know we were joking before, but it's a real issue I've seen where club members or other's pass away and the spouse or other relatives are left selling stuff they know nothing about. There are plenty of vultures and they'll come in, buy the whole kit and caboodle for a song, and the spouse has no idea they've been swindled out of $10K, $15K, or $50K.