Abstract: A double helix firearm sound suppressor having a front portion with a front chamber, a rear portion with a rear chamber, and a hollow central core in the front chamber. Hollow projections extend from the hollow central core into the front chamber, wherein interiors of the hollow projections communicate with an interior of said hollow central core. The hollow projections form one or more helical pathways for propellant gases in one direction around the hollow central core and form one or more helical pathways for propellant gases in an opposite direction around the hollow central core. Openings in the hollow projections allow propellant gases to flow from the interior of the central core into the front chamber. The double helix configuration greatly increases the surface area for dissipating and suppressing sound.

Abstract: A firearm sound suppressor having a one-piece monocore. The monocore comprises a mainframe and a central channel therein which is connected to the mainframe by support arms which form support chambers. The central channel has a circular central bore, through which a projectile passes, and a rectangular external shape with four sides with openings thereon, wherein each side rotates 60 to 120 degrees around the longitudinal axis of the central bore, forming a helical twist in the central channel. The support chambers are attached to connecting members at the circumference of the mainframe. The support chambers and connecting members form the same helical configuration as the central channel, producing a helical flow of propellant gases, coming out of the openings, from the rear end to the front end of the central channel. Compressed propellant gases are prevented from entering the central chamber in front of the projectile. This design improves sound suppression and accuracy of the firearm.

Abstract: A firearm sound suppressor having a one-piece monocore. The monocore comprises a mainframe and a central channel therein which is connected to the mainframe by support arms which form support chambers. The central channel has a circular central bore, through which a projectile passes, and a rectangular external shape with four sides with openings thereon, wherein each side rotates 60 to 120 degrees around the longitudinal axis of the central bore, forming a helical twist in the central channel. The support chambers are attached to connecting members at the circumference of the mainframe. The support chambers and connecting members form the same helical configuration as the central channel, producing a helical flow of propellant gases, coming out of the openings, from the rear end to the front end of the central channel. Compressed propellant gases are prevented from entering the central chamber in front of the projectile. This design improves sound suppression and accuracy of the firearm.