UTAS 12 Ga Shotgun Suppressor Posted January 19, 2015 in Companies, NFA / Suppressors / Class III, Shotguns by Nicholas C with 7 CommentsTags: shotgun suppressor, UTAS I got a sneak peak at UTAS new 12 gauge suppressor. It is designed and made by them. No idea on price yet as these are the only two prototypes in existence. I was told that this suppressor can reduce shotgun report as low as 138 decibels.