So now that the new 2016 Form 4 is active, every member of a Trust listed on Form 4 has to submit a Form 5320.23 to the ATF and a copy to the local CLEO. The form going to the ATF has to be accompanied by one 2"x2" photo and two sets of fingerprints on form FD-258 but I don't see an explanation as to whether or not multiple photos/fingerprints are required if submitting Form 4s for multiple suppressors/SBRs etc. It's kind of obvious if you're submitting paperwork for a Trust for one SBR, one suppressor etc., but it's not obvious if you need to submit multiple photos and prints with each Form 4 application.