Like others said...go with a lawyer.
A trust generated by Quicken will work if you never plan on actually using it for it's other benefits (for when you die, etc). As a purely temporary placeholder for NFA stuff that you'll eventually dissolve, it's fine.
If, however, you want to actually use the trust as a way to provide for your beneficiaries after your death...accidental or otherwise...go with a real lawyer-drawn up trust, preferrably by someone who's actually done one before. If you go with the Quicken Willmaker way, and if you should happen to die, there's a legal minefield that you've just dropped your beneficiaries into (and anyone else associated with the trust). Things like "did the assets in the trust appreciate since original purchase (like, say, a machine gun)?" and other fun things like that. Quicken doesn't handle that, but a real NFA trust should.
But, I guess it all really depends on what you plan on doing with it.
I wound up going with a simple sheriff's signoff, mostly because it was cheaper and he was happy to do so.