Abstract: Trigger groups for striker-fired firearms have a firing pin assembly connected to a slide and operable to reciprocate between a rearward retracted position and a forward extended position, the firing pin assembly including a retention surface, a trigger assembly including a sear surface configured to selectively engage the retention surface to releasably restrain the firing pin assembly, the firing pin assembly being responsive to the trigger assembly to release from the retracted position to the extended position in response to movement of the trigger assembly from the forward trigger position to the rearward trigger position and to release from the retracted position to the extended position in response to movement of the trigger assembly from the rearward trigger position to the forward trigger position, the trigger assembly including a retainer movable between a clear position and a blocking position.

Abstract: Trigger groups for striker-fired firearms have a firing pin assembly connected to a slide and operable to reciprocate between a rearward retracted position and a forward extended position, the firing pin assembly including a retention surface, a trigger assembly including a sear surface configured to selectively engage the retention surface to releasably restrain the firing pin assembly, the firing pin assembly being responsive to the trigger assembly to release from the retracted position to the extended position in response to movement of the trigger assembly from the forward trigger position to the rearward trigger position and to release from the retracted position to the extended position in response to movement of the trigger assembly from the rearward trigger position to the forward trigger position, the trigger assembly including a retainer movable between a clear position and a blocking position.

Abstract: A pistol comprising: a frame having an elongated upper portion defining a centerline; a front sight connected to a forward portion of the upper portion; a rear sight connected a rear portion of the upper portion; a first one of the front sight and the rear sight being right of the center line; the other one of the front and rear sight being left of the center line; the front sight being scaled larger than the rear sight to present an equivalent angular dimension as the rear sight; and each of the front sight and rear sight being entirely to one side of the centerline.

Abstract: Pistols having a plurality of operating conditions have a frame having a trigger, an elongated slide connected to the frame and having a rear end facing a user, a moving control element on the elongated slide and positioned in a first position when the pistol is in a first operating condition, and positioned in a second condition when the pistol is in a second operating condition, an indicator on the moving control element visible to the rear, indicia on the elongated slide having a first element associated with the first operating condition and a second element associated with the second operating condition, and the indicator being registered with the first element of the indicia when the moving control element is in the first position, and the indicator being registered with the second element of the indicia when the moving control element is in the second position.

Abstract: A trigger assembly for a firearm has a frame, a trigger element pivotally connected to the frame and having a trigger lever operable for movement between a forward released position and a rearward actuated position, a hammer pivotally connected to the frame and movable between a cocked position and a striking position, a shroud element pivotally connected to the frame and having a shroud lever operable for movement between a forward disabling position and a rearward enabling position, a link pivotally connected to the frame and having a first portion operably interfacing the reciprocating action element and a second portion operably interfacing the shroud element, and the link being operable when the reciprocating action element moves from the rear recoil position to the forward battery position to motivate the shroud element from the rearward enabling position to the forward disabling position.

Abstract: Trigger groups for semi-automatic firearms have a frame, a hammer connected to the frame and movable between a cocked position and a striking position, the hammer being biased toward the striking position, a trigger element connected to the frame and movable by a user between a forward position and a rearward position, a selector connected to the frame and movable between at least a first position and a second position, a disconnector having a hammer engagement facility adapted to selectably engage the hammer, a disconnector control element movable between a first control position and a second control position, the disconnector being operably engaged to the disconnector control element, the disconnector operable to move in a first range of motion when the disconnector control element is in the first control position, and in a second range of motion when the disconnector control element is in the second control position.

Abstract: A locking action firearm has a frame, a barrel connected to the frame, a reciprocating action element operable to reciprocate with respect to the frame between a forward battery position and a rear recoil position, a trigger lever connected to the frame and movable between a forward released position and rear actuated position, and a block element movable between a rest position in which movement of the reciprocating action element from the battery position to the recoil position is enabled, and a blocking position in which the block element contacts the reciprocating action element to prevent movement of the reciprocating action element from the forward battery position to the recoil position in response to movement of the trigger lever to discharge the firearm. The block element may be operably connected to the trigger lever and move based on the trigger lever position.

Abstract: A locking action firearm has a frame, a barrel connected to the frame, a reciprocating action element operable to reciprocate with respect to the frame between a forward battery position and a rear recoil position, a trigger lever connected to the frame and movable between a forward released position and rear actuated position, and a block element movable between a rest position in which movement of the reciprocating action element from the battery position to the recoil position is enabled, and a blocking position in which the block element contacts the reciprocating action element to prevent movement of the reciprocating action element from the forward battery position to the recoil position in response to movement of the trigger lever to discharge the firearm. The block element may be operably connected to the trigger lever and move based on the trigger lever position.

Abstract: Trigger groups for striker-fired firearms have a firing pin assembly connected to a slide and operable to reciprocate between a rearward retracted position and a forward extended position, the firing pin assembly including a retention surface, a trigger assembly including a sear surface configured to selectively engage the retention surface to releasably restrain the firing pin assembly, the firing pin assembly being responsive to the trigger assembly to release from the retracted position to the extended position in response to movement of the trigger assembly from the forward trigger position to the rearward trigger position and to release from the retracted position to the extended position in response to movement of the trigger assembly from the rearward trigger position to the forward trigger position, the trigger assembly including a retainer movable between a clear position and a blocking position.

Abstract: Firearm control mechanisms have a frame, a trigger element connected to the frame and movable with respect to the frame, a selector connected to the frame and pivotable with respect to the frame about a pivot axis, the selector including a first cam surface operably engaged to a follower portion of the trigger element, the selector having a detent portion having a detent surface opposing a spring biased detent follower connected to the frame and operable to reciprocate against the detent surface, the detent surface having a plurality of stable positions, each corresponding to an operating condition of the fire control mechanism, and the detent portion being a body lacking any concave surfaces. The detent surface may have a plurality of flat cam surfaces. At least two of the flat cam surfaces may be perpendicular to each other. A corner may join the plurality of flat cam surfaces.

Abstract: Trigger groups for striker-fired firearms have a frame defining a medial plane, a slide connected to the frame and operable to reciprocate between a forward battery position and a rearward recoil position, a barrel connected to the slide and having a forward muzzle end, a trigger assembly connected to the frame and movable between a forward trigger position and a rearward trigger position, a firing pin assembly connected to the slide and operable to reciprocate between a rearward retracted position and a forward extended position, the firing pin assembly including a forward-facing retention surface, the trigger assembly including a sear surface configured to selectively engage the retention surface to releasably restrain the firing pin assembly, a selector movable between a first selector position and a second selector position, and a connector operably engaged to the trigger assembly and to the selector.

Abstract: Firearm control mechanisms have a frame, a trigger element connected to the frame and movable with respect to the frame, a selector connected to the frame and pivotable with respect to the frame about a pivot axis, the selector including a first cam surface operably engaged to a follower portion of the trigger element, the selector having a detent portion having a detent surface opposing a spring biased detent follower connected to the frame and operable to reciprocate against the detent surface, the detent surface having a plurality of stable positions, each corresponding to an operating condition of the fire control mechanism, and the detent portion being a body lacking any concave surfaces. The detent surface may have a plurality of flat cam surfaces. At least two of the flat cam surfaces may be perpendicular to each other. A corner may join the plurality of flat cam surfaces.

Abstract: Trigger groups for striker-fired firearms have a frame defining a medial plane, a slide connected to the frame and operable to reciprocate between a forward battery position and a rearward recoil position, a barrel connected to the slide and having a forward muzzle end, a trigger assembly connected to the frame and movable between a forward trigger position and a rearward trigger position, a firing pin assembly connected to the slide and operable to reciprocate between a rearward retracted position and a forward extended position, the firing pin assembly including a forward-facing retention surface, the trigger assembly including a sear surface configured to selectively engage the retention surface to releasably restrain the firing pin assembly, a selector movable between a first selector position and a second selector position, and a connector operably engaged to the trigger assembly and to the selector.

Abstract: A pistol comprises a frame with a slide operable to reciprocate on the frame. A trigger movably connected to the frame to move between a forward position and rear position, and a block element selectably interfacing with the slide and movable between a released position in which the slide is enabled to reciprocate and a locked position in which the slide is prevented from reciprocation. The block element is operably engaged to the trigger to move to the locked position when the trigger is in the rear position, such that the slide does not recoil after discharge when the trigger is held to the rear position.

Abstract: A locking action firearm has a frame, a barrel connected to the frame, a reciprocating action element operable to reciprocate with respect to the frame between a forward battery position and a rear recoil position, a trigger lever connected to the frame and movable between a forward released position and rear actuated position, and a block element movable between a rest position in which movement of the reciprocating action element from the battery position to the recoil position is enabled, and a blocking position in which the block element contacts the reciprocating action element to prevent movement of the reciprocating action element from the forward battery position to the recoil position in response to movement of the trigger lever to discharge the firearm. The block element may be operably connected to the trigger lever and move based on the trigger lever position.

Abstract: A pistol comprises a frame with a slide operable to reciprocate on the frame. A trigger movably connected to the frame to move between a forward position and rear position, and a block element selectably interfacing with the slide and movable between a released position in which the slide is enabled to reciprocate and a locked position in which the slide is prevented from reciprocation. The block element is operably engaged to the trigger to move to the locked position when the trigger is in the rear position, such that the slide does not recoil after discharge when the trigger is held to the rear position.

Abstract: Trigger groups for semi-automatic firearms have a frame, a hammer connected to the frame and movable between a cocked position and a striking position, the hammer being biased toward the striking position, a trigger element connected to the frame and movable by a user between a forward position and a rearward position, a selector connected to the frame and movable between at least a first position and a second position, and a plurality of retention facilities each operable to selectively restrain the hammer in the cocked position, and when the selector is in the second position to enable discharge of the firearm in response to movement of the trigger to the forward position after movement to the rearward position and to enable an additional discharge of the firearm upon release of the trigger to the forward position.

Abstract: Trigger groups for semi-automatic firearms have a frame, a hammer connected to the frame and movable between a cocked position and a striking position, the hammer being biased toward the striking position, a trigger element connected to the frame and movable by a user between a forward position and a rearward position, a selector connected to the frame and movable between at least a first position and a second position, and a plurality of retention facilities each operable to selectively restrain the hammer in the cocked position, and when the selector is in the second position to enable discharge of the firearm in response to movement of the trigger to the forward position after movement to the rearward position and to enable an additional discharge of the firearm upon release of the trigger to the forward position.

Abstract: Trigger groups for semi-automatic firearms have a hammer, a trigger element, a sear, a selector, and a disconnector assembly, the disconnector assembly operable when the selector is in a first position to retain the hammer in the cocked position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, and the disconnector assembly operable when the selector is in a second position to release the hammer to the striking position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, such that the firearm discharges once per cycle of the trigger element when the selector is in the first position, and fires once for each forward or rearward motion of the trigger element when the selector is in the second position.

Abstract: Trigger groups for semi-automatic firearms have a hammer, a trigger element, a sear, a selector, and a disconnector assembly, the disconnector assembly operable when the selector is in a first position to retain the hammer in the cocked position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, and the disconnector assembly operable when the selector is in a second position to release the hammer to the striking position in response to release of the trigger element to the rest position subsequent to discharge of the firearm by pulling the trigger element, such that the firearm discharges once per cycle of the trigger element when the selector is in the first position, and fires once for each forward or rearward motion of the trigger element when the selector is in the second position.