I am glad I saw this! Going to need one myself soon, got my trust setup by Marc, efiling my form1 to build a titanium "solvent trap" suppressor for a 300 blackout. Got lead, need a mold and dies and I will be shooting a quiet new fun toy in a few months.
Trying to decide if I am going to permanently attach it to a short barrel to make it legal length or do I want to put it on my .223 sometimes as well? Not sure how well it will work with a bigger bore so I may just make this dedicated for the 300. Hopefully someday the hearing protection act will pass and I can buy or build ones for most of them.