A trigger device for a bolt action firearm is disclosed. The trigger device comprises a trigger, a housing, a bolt pin, and a bolt pin arm. The trigger is rotatably coupled in the housing via a trigger pivot pin and comprises a trigger stop arm. The bolt pin is moveable between a bolt open position and a bolt closed position in response to positioning of a bolt. The bolt pin arm is rotatably coupled proximal one end to the housing and at another end to the bolt pin. The bolt pin arm comprises an over travel stop configured to selectively engage with the trigger stop arm. In the bolt closed position, the over travel stop is positioned within a travel path of the trigger stop arm. In the bolt open position, the over travel stop is positioned outside of the travel path of the trigger stop arm.

A trigger unit for a firearm, including a hammer rotatable about a hammer axis and prestressable by a hammer spring, a trigger lever rotatable about a trigger axis, the trigger lever has a trigger and a trigger rear, which receives at least one interrupter. A sear is rotatably mounted about a sear axis and prestressable by a sear spring. The sear axis and the trigger axis coincide, and the sear has a bearing recess for receiving and limited rotation about a disconnector axis of a disconnector pivot formed on the underside of the disconnector, the bearing recess being formed surrounding the disconnector pivot at least partially in the direction of rotation about the disconnector axis.

A trigger unit for a firearm, including a hammer rotatable about a hammer axis and prestressable by a hammer spring, a trigger lever rotatable about a trigger axis, the trigger lever has a trigger and a trigger rear, which receives at least one interrupter. A sear is rotatably mounted about a sear axis and prestressable by a sear spring. The sear axis and the trigger axis coincide, and the sear has a bearing recess for receiving and limited rotation about a disconnector axis of a disconnector pivot formed on the underside of the disconnector, the bearing recess being formed surrounding the disconnector pivot at least partially in the direction of rotation about the disconnector axis.

A universal percussion trigger mechanism, comprising a trigger housing (22) with a magazine (1), safety catch (3), magazine latch (7), firing pin (8), trigger bar (23), spring (12) of the trigger bar, universal percussion mechanism (38), which is fixed in the receiver (20), and consists of a bracket for universal percussion mechanism (16), cocking piece (17) with a cocking indicator mounted on the axis of the cocking piece (18) and spiral mainsprings (19), sear (11) and a single-shot sear (27).

A universal percussion trigger mechanism, comprising a trigger housing (22) with a magazine (1), safety catch (3), magazine latch (7), firing pin (8), trigger bar (23), spring (12) of the trigger bar, universal percussion mechanism (38), which is fixed in the receiver (20), and consists of a bracket for universal percussion mechanism (16), cocking piece (17) with a cocking indicator mounted on the axis of the cocking piece (18) and spiral mainsprings (19), sear (11) and a single-shot sear (27).

Provided is a trigger assembly that helps prevent malfunctioning of trigger assemblies in firearms. This is accomplished by the expedient of a convex curved projection on the upper surface of the actual trigger of the trigger assembly. Interfacing with this convex surface on the trigger is a mating concave curved projection having a surface with a radius that is similar to the radius of the trigger's concave curved projection. The trigger's concave curved projection extends relatively downwardly from the bottom side of the actual hammer of the trigger assembly. The relationship of the trigger and the hammer of the trigger assembly provides a trigger/hammer interface when the convex curved projection of the trigger is proximate the concave curved projection of the hammer. In this trigger assembly there is a captive disconnector having a disconnector engagement stabilizing projection formed as a portion of the disconnector. The stabilizing projection is generally opposite from the portion of the disconnector having a hook or small ledge where there is contact between the projecting elements of the disconnector and of the hammer. This disconnector engagement stabilizing projection limits the travel of the disconnector interfacing projection of the hammer from moving away from the disconnector engagement location of the trigger assembly.

Provided is a trigger assembly that helps prevent malfunctioning of trigger assemblies in firearms. This is accomplished by the expedient of a convex curved projection on the upper surface of the actual trigger of the trigger assembly. Interfacing with this convex surface on the trigger is a mating concave curved projection having a surface with a radius that is similar to the radius of the trigger's concave curved projection. The trigger's concave curved projection extends relatively downwardly from the bottom side of the actual hammer of the trigger assembly. The relationship of the trigger and the hammer of the trigger assembly provides a trigger/hammer interface when the convex curved projection of the trigger is proximate the concave curved projection of the hammer. In this trigger assembly there is a captive disconnector having a disconnector engagement stabilizing projection formed as a portion of the disconnector. The stabilizing projection is generally opposite from the portion of the disconnector having a hook or small ledge where there is contact between the projecting elements of the disconnector and of the hammer. This disconnector engagement stabilizing projection limits the travel of the disconnector interfacing projection of the hammer from moving away from the disconnector engagement location of the trigger assembly.

A fire control group has a receiver having opposed sidewalls defining a space configured to receive a fire control group, the opposed sidewalls each defining a pivot pin aperture, the pivot pin apertures being registered with each other, a fire control group including a trigger received in the space, the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver, the fire control group including a pivoting operational element, the fire control group including a pivot pin supporting the pivoting operational element and received in the transverse pivot pin passage and the pivot pin apertures, the firearm having a hand grip aft of the trigger and defining a screw aperture, and a grip screw engaging the hand grip and engaging the fire control group. The grip screw may occupy a medial plane of the firearm.

A fire control group has a receiver having opposed sidewalls defining a space configured to receive a fire control group, the opposed sidewalls each defining a pivot pin aperture, the pivot pin apertures being registered with each other, a fire control group including a trigger received in the space, the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver, the fire control group including a pivoting operational element, the fire control group including a pivot pin supporting the pivoting operational element and received in the transverse pivot pin passage and the pivot pin apertures, the firearm having a hand grip aft of the trigger and defining a screw aperture, and a grip screw engaging the hand grip and engaging the fire control group. The grip screw may occupy a medial plane of the firearm.

A trigger unit including a support adapted to be mounted on a receiver of a firearm and supporting components of a trigger mechanism and a safety system; the trigger unit is modular; the support includes a plurality of seats adapted to accommodate one or more different functional components in various combinations.