Patent attributes
A suppressor for a firearm includes a casing having a front end and defining a longitudinal axis. Baffles are inside the casing, and a front cap is downstream from the baffles. A retainer is connected to the casing, disposed between the baffles and the front cap, and has upstream and downstream surfaces. The baffles, front cap, and retainer define a fluid pathway along the longitudinal axis. Apertures through the retainer and radially disposed from the fluid pathway provide fluid communication through the retainer. A contoured wall extends axially upstream from the upstream surface of the retainer and defines a plurality of damping wells in the upstream surface of the retainer radially disposed from the fluid pathway and circumferentially separated by the apertures. The downstream surface of the retainer is symmetrical with the upstream surface.