Abstract: A slide action conversion assembly for converting a gas operated rifle into a manually operated slide action rifle. The conversion assembly replaces the gas operating system of the rifle with a linkage assembly attached to the original bolt carrier at a rearward end and to a sliding handguard grounded to a replacement stationary handguard at forward end. The linkage reciprocates within one degree of freedom along a path parallel to the barrel in order to manually cycle the converted firearm. The conversion assembly further incorporates a sliding handguard locking mechanism to prevent manual cycling when the firearm is in battery.

Abstract: A sliding action for riles having an upper and a lower receiver in which the firing mechanism is totally installed OEM in the lower receiver, including a disconnector mechanism, and is fed by magazine. The OME gas operating system is removed, thus eliminating the semi-automatic mode feature, and substitutes the operating system by a Slide Action assembly having a kinematic chain of individually joint parts, which when assembled establish a solid array with one degree of freedom as a whole, and moving reciprocatingly along a path parallel to the barrel. The invention incorporates a structural guiding tube and supports to prevent buckling of the chain; a handguard; a sliding mobile forend with a polygonal open concave, symmetrical shape incorporating the guides for the sliding mobile forend. An external locking mechanism, installed in the forend locks the Slide Action against the grounded handguard. A driver clamp connects externally the Sliding chain.

Abstract: An Operating System for firearms combining a direct drive gas piston system, functioning in conjunction with a linkage mechanism operating within a structural tube, enabling the use of a frontal charging handle or a sliding handguard allowing a frontal actuated, ambidextrous, non-reciprocating charring operation. The operating system is conceived to be easily retrofitted in M16 rifles without performing any machining operations. The artifact partially comprises affixing supports, a structural tube to constrain and align the actuating components, a securing frontal gas block, a regulated direct gas piston including an independent push bar with alignment rings, springs, and freely displacing parts with lateral projections connecting with the exterior handle or hand guard actuator.

Abstract: An Operational System for Firearms founded on the use of the synchronic controlled motion and cooperative interaction of elements of a Pivotally Articulated Bolt Train displacing reciprocatingly within a compliant receiver, along guiding means, disposed according to a purposely engineered Path, capable of generating anticipated adjustable dynamic reactions, and to execute mechanical actions, due to pre-calculated movements of interconnecting mechanisms within said Train members, when they pivot one relative to the other. The alternate divergent and converging motion of the Train Bolt and A Firing Mechanism Carriage subassembly, along a horizontal path, and a transverse path, modifies and splits the linear bearing of the recoil force, and generates a Gyroscopic Effect or Angular Moment, decreasing the Barrel Torque magnitude, conveying a unique tailored dynamic behavior, while performing different functions and achieving the eleven different purposes of this invention.

Abstract: An improved firearm having an Pivotally Articulated Bolt Train assembly consisting of a series of linked carriages, containing firing mechanisms, placed inside a compact ergonomic jaw articulated receiver, holding all the sub assemblies in the convenient location, synchronizing the movements of all the components, and controlling its alternating motion by displacing along divergent and converging paths and tracks, where the Bolt Train, moving through tracks, displaces to align, entirely horizontally, with the barrel axis, rapidly shifting into a curved and transverse path. Such motion forces the cocking, the partial displacement into a Handle Tunnel, and modifies the bearing of the recoil force, conveying a unique dynamic behavior. When displacing rearwards it generates a dual transient angular momentum vector helping to compensate the “barrel Torque” phenomenon caused by the bullet rifling when fired.

Abstract: A combined retrofit direct drive gas piston system, for use with M-16 rifle and other appropriated platforms, operating in conjunction with a frontal actuated, ambidextrous, non reciprocating charging system, working in tandem with other existing charging handle systems. The device, conceived to be installed in said rifles in an effortless manner by coupling supporting components with the receiver and the barrel without performing any machining operations. The artifact partially comprises affixing supports, a structural tube to constrain and hold the components, a securing frontal gas block, a regulated direct gas piston system including an independent push bar with alignment rings, springs, and freely displacing part with projections connecting with the exterior handle or hand guard actuator. By enabling to use the extended firer's supporting hand for charging, said artifact solves complicated ergonomic maneuvers required to charge the original M-16.

Abstract: A combined retrofit direct drive gas piston system, for use with M-16 rifle and other appropriated platforms, operating in conjunction with a frontal actuated, ambidextrous, non reciprocating charging system, working in tandem with other existing charging handle systems. The device, conceived to be installed in said rifles in an effortless manner by coupling supporting components with the receiver and the barrel without performing any machining operations. The artifact partially comprises affixing supports, a structural tube to constrain and hold the components, a securing frontal gas block, a regulated direct gas piston system including an independent push bar with alignment rings, springs, and freely displacing part with projections connecting with the exterior handle or hand guard actuator. By enabling to use the extended firer's supporting hand for charging, said artifact solves complicated ergonomic maneuvers required to charge the original M-16.

Abstract: This invention is about a firearm having an Articulated Bolt Train Assembly consisting of a series of linked carriages, containing mechanisms, displacing along non parallel tracks guides placed inside a by design Jaw Articulated Receiver that controls and governs its divergent paths, and holds all the sub assemblies in the convenient location allowing the synchronic movements of all the components to take place. The alternate divergent and converging motion of the Bolt Train Assembly and the Firing Mechanism, along, both, a bore axial path, and a transverse path, modifies the bearing of the recoil force, conveying a unique dynamic behavior, while performing different functions and achieving different purposes. In addition, the interaction of several components produce delay in the breech opening, and decelerate the rearwards motion to help, even more, the recoil damping. This invention has relevant consequences associated with the increased performance of firearms in civilian or military uses.