Abstract: A firearm suppressor for mounting on a firearm to suppress sound emanating from the firearm when fired may comprise a housing defining an interior and a baffle insert positioned in the interior of the housing. The baffle insert may have at least two baffle wall portions dividing the interior of the housing into at least three baffle chambers, with the baffle wall portions being spaced from each other in a longitudinal direction of the insert. The baffle insert may define a central longitudinal passage for a projectile fired from the firearm to pass through the insert. The baffle insert may define a convoluted passage for combustion gases to pass through the insert, with the convoluted passage being distinct from the longitudinal passage. The convoluted passage may be in communication with the central longitudinal passage and may be defined by at least one auxiliary hole extending through the baffle wall portions.