Abstract: A gas operating system for a firearm includes a gas block, a barrel nut that maintains the gas block at a predetermined axial position on a barrel of the firearm, a member that is movable with respect to the gas block axially with respect to the barrel in response to pressure exerted by expanding propellant gases conveyed thereto by the gas block and a mechanical linkage receiving a force form the member urging it in an axial direction of the barrel and coupled with a loading and ejection mechanism of the firearm to convey the force thereto for operating the loading and ejection mechanism. Various embodiments of gas block assemblies and operating rods for gas operating systems for firearms are provided.

Abstract: Processes and systems are disclosed for recording data relating to a shot by a projectile weapon. Environment data occurring prior to data indicating the occurrence of a shot by the projectile weapon is retained for subsequent evaluation. Such environment data includes, but is not limited to, ambient audio data, video data produced by a video camera associated with the projectile weapon, GPS data representing locations of the projectile weapon, electronic compass data representing orientations of the projectile weapon and acceleration data representing accelerations of the projectile weapon.

Abstract: A gas operating system for a firearm includes a gas block, a barrel nut that maintains the gas block at a predetermined axial position on a barrel of the firearm, a member that is movable with respect to the gas block axially with respect to the barrel in response to pressure exerted by expanding propellant gases conveyed thereto by the gas block and a mechanical linkage receiving a force form the member urging it in an axial direction of the barrel and coupled with a loading and ejection mechanism of the firearm to convey the force thereto for operating the loading and ejection mechanism. Various embodiments of gas block assemblies and operating rods for gas operating systems for firearms are provided.

Abstract: A gas operating system for a firearm includes a gas block, a barrel nut that maintains the gas block at a predetermined axial position on a barrel of the firearm, a member that is movable with respect to the gas block axially with respect to the barrel in response to pressure exerted by expanding propellant gases conveyed thereto by the gas block and a mechanical linkage receiving a force form the member urging it in an axial direction of the barrel and coupled with a loading and ejection mechanism of the firearm to convey the force thereto for operating the loading and ejection mechanism. Various embodiments of gas block assemblies and operating rods for gas operating systems for firearms are provided.

Abstract: Processes and systems for detecting a shot by a projectile weapon are disclosed. Data is obtained along at least two different axes for use in determining whether a shot has taken place based on an evaluation by a processor. In certain embodiments, multiple detection systems are positioned on a weapons platform mounting multiple projectile weapons, and each is configured to detect only a shot by a respective one of the projectile weapons.