I have a trust here in MS, but I dont think there are any material differences between the two states other than the length of time the trust can exist. You forgot to mention one pro of the trust. If written correctly any of the trusties of the trust can possess the items owned in the trust. I have a trust in place and my brother (who can legally posses a gun) is a trustee. The language in the trust states grantors and trustees have the rite to use any items controled under the NFA. This allows my brother to have the cans while I am not around. This has also been done with employees in an LLC but I have never dont that. The down side to owning it personally is that it has to always be in your site when in use.
I trust my brother with my stuff so its no big deal. I would not recommend doing this with a casual acquaintance.
Thanks, I added that to the top.