LinuxUser gives some good advice about the trust, because you are entering into a sensitive area. Contact a firearms attorney and DO NOT do the paperwork yourself. It is full of pitfalls because you are applying for permission to become a suppressor manufacturer, and it's a bit different than transferring an existing one. Also realize that after you manufacture it, you may still have to transfer it to yourself for personal use depending on your state laws.
A competent attorney is worth his weight in gold and will only cost a few hundred dollars for the initial consultation. Take it seriously and it will go smoothly!
Malo periculosam, libertatem quam quietam servitutem." (I prefer the tumult of liberty to the quiet of servitude.). Thomas Jefferson
"All that is necessary for the triumph of evil is that good men do nothing."
-Edmund Burke, Loosely translated from Thoughts on the Cause of Present Discontents. (1770)