Abstract: A suppressor for a firearm has a body defining an internal volume, a baffle in the body and defining a baffle aperture on a bore axis, a piston element including a mount facility configured for connection to the barrel, the piston element defining a piston bore registered with the bore axis, and the piston element operable to reciprocate with respect to the body along the bore axis between a rest position in which the piston element contacts the baffle and a recoil position in which the piston element is away from the baffle. There may be a spring interfacing the piston element and the body and be operable to bias the piston element to the rest position. There may be a second spring operable to interface the body and the piston element only when the piston element is in a range of positions proximate the recoil position.

Abstract: A suppressor mount facility for a firearm has a rear cap associated with a suppressor, an adapter having a facility for connection to a barrel associated with the firearm and defining an adapter bore, the rear cap defining an internally threaded cap bore, the adapter having an externally threaded portion configured to removably connect to the internally threaded cap bore in a connected condition, and at least one of the rear cap and the adapter having a flexible spring portion configured to bias against the other of the rear cap and the adapter when in the connected condition. There may be a plurality of springs arranged circumferentially about the adapter bore. The plurality of springs may be leaf springs. The plurality of springs may extend rearwardly from the threaded portion of the adapter.