Abstract: A handguard is for a firearm having a firearm upper. The handguard includes a body and a cam. The body is structured to be coupled to the firearm upper. The body has a central lumen having a longitudinal axis. The cam may be coupled to the body in substantially perpendicular alignment to the longitudinal axis, and is configured to rotate between an UNLOCKED position and a LOCKED position. When the cam rotates from the UNLOCKED position toward the LOCKED position, the cam rotates into the central lumen.

Abstract: Suppressor systems and apparatuses for use with firearms are provided. A suppressor includes a core, a main can, and a spring. The core defines a first channel that intersects a radially dispersed hole configuration and is configured to be coupled to a firearm. The main can is disposed around the core and includes a baffle structure. The baffle structure includes a plurality of baffles that define a second channel and a plurality of chambers intersecting the second channel. In various configurations, the core and/or the main are either a unitary piece or each formed from a plurality of components. The spring is configured to axially bias the main can with respect to the core, thereby providing for a valve action that controls a flow of a volume of gas produced by a discharge of the firearm.