Patent ID: 8272313
Filing Date: 2012-09-25
Classification: F41A

Abstract:
1. A firearm having at least one barrel, the barrel having a chamber end and a firing end, a chamber operably connected to the barrel, and a bolt head capable of closing a cartridge in the chamber, the firearm comprising: at least first and second inertia blocks capable of receiving a first and second momentum and the first and second inertia blocks having a component of movement perpendicular to the longitudinal axis defined by the barrel; the bolt head configured to alternate between a forward position and a rearward position in response to the movement of the first and second inertia blocks, the first and second inertia blocks linked to the bolt head whereby the progressive movement of the inertia blocks in response to receiving momentum corresponds with a progressive backward movement of the bolt head; a gas injection system for applying a portion of high-pressure gases from the firing of one or more cartridges to at least one inertia block; and a breech locking mechanism separate from the inertia block and configured to be capable of locking the bolt head to the chamber at the chamber end of the barrel.