How much does it cost to have one made there? Perhaps some of the expense can be offset by renting one or selling the one made for you. Even if neither pans out, I cannot imagine the hassle of appealing to the ATF to export and import a silencer.
Where in Helotes was the shoot held? I live off Bandera Rd and can only imagine how much fun I would have had if we'd lived in town back then. At any rate, my first "shoot" was at "The Gun Store" on Tropicana in Vegas. Not quite a social gathering but went with friends and had a great time shooting the various guns they had for rental.