Reply To: What month are they in? Home › Forums › NFA Tracker › Form 4 Questions › What month are they in? › Reply To: What month are they in? 20170114 at 12:43 am #76320 Tin CupParticipant Posts: 7 Join Date: 01/06/2016 If there was/is an excise tax on those just like I think there are on guns, they would make way more money. They could sell 8 or 9 suppressors and recoup the “tax loss” by volume of sales.