A weapon includes a stationary barrel mounted fixedly in a frame, and a slide movably mounted to the frame for forward and backward displacement relative to the frame. A locking mechanism for the slide includes a retractable spring acting on the slide in a direction towards a forward-most position of the slide, and a pair of levers arranged under the barrel between the slide and the frame. The pair of have opposite end axes of rotation and are mutually rotatably connected by a common axis. The common axis lies under a line that extends between the end axes of rotation of the pair of levers.

A cartridge casing of a cartridge for a lever action firearm, the cartridge casing comprising a rim comprising a flat front face configured to provide a gripping surface for an extractor of the lever action firearm to remove the cartridge casing of the cartridge after firing of the lever action firearm, the rim having a radial gradient that decreases from a maximum radius at a first location on the rim that is prior to the flat front face to a minimum radius value at a second location on the rim corresponding to the flat front face.

Methods and systems are provided for a firearm. The firearm may include safety features having a trigger block preventing trigger actuation when a lever in the firearm is in a partially cocked position and/or a safety mechanism positioned in front of the trigger.

Methods and systems are provided for a firearm. The firearm may include safety features having a trigger block preventing trigger actuation when a lever in the firearm is in a partially cocked position and/or a safety mechanism positioned in front of the trigger.

Methods and systems are provided for a firearm. The firearm may also include features facilitating efficient assembly/disassembly of the action such as a disassembly latch facilitating rapid and efficient removal of the firearm's action assembly and well as efficient action manufacturing methods.

A receiver system comprises upper and lower receiver bodies, a lower receiver body, a bolt carrier, and an action-control lever. The upper receiver body is a semi-automatic firearm upper receiver body. The lower receiver body includes a stock mounting flange having a stock receptacle that is matingly engageable with a receiver engaging portion of a stock. The bolt carrier is slidably disposed within a bolt carrier receiving bore of the upper receiver body. The action-control lever has a hand loop and a first attachment arm having a proximate end portion thereof attached to the hand loop. The first attachment arm is pivotably attached at a distal end thereof to the lower receiver body for being pivoted between a battery-ready position and a cartridge-ejecting position relative to the lower receiver body. The action-control lever is attached to the bolt carrier through an articulating coupling assembly.

A receiver system comprises upper and lower receiver bodies, a lower receiver body, a bolt carrier, and an action-control lever. The upper receiver body is a semi-automatic firearm upper receiver body. The lower receiver body includes a stock mounting flange having a stock receptacle that is matingly engageable with a receiver engaging portion of a stock. The bolt carrier is slidably disposed within a bolt carrier receiving bore of the upper receiver body. The action-control lever has a hand loop and a first attachment arm having a proximate end portion thereof attached to the hand loop. The first attachment arm is pivotably attached at a distal end thereof to the lower receiver body for being pivoted between a battery-ready position and a cartridge-ejecting position relative to the lower receiver body. The action-control lever is attached to the bolt carrier through an articulating coupling assembly.

Lever action firearms have an upper frame defining a bolt passage, a bolt carrier assembly received in the upper frame and operable to reciprocate between an open position and a closed position, a lower frame defining a magazine well configured to removably receive a box magazine, the lower frame removably connected to the upper frame by a transverse takedown pin, an action lever movable between a retracted position and an extended position and having a first pivot, and pivotally connected to the lower frame at the first pivot, a first link pivotally connected to the lower frame, a second link pivotally connected to the bolt carrier assembly, the first link and second link pivotally interconnected to each other, the first link defining a cam path, and a cam follower on the action lever operably engaged to the cam path such that movement of the action lever generates movement of the bolt carrier assembly.

Lever action firearms have an upper frame defining a bolt passage, a bolt carrier assembly received in the upper frame and operable to reciprocate between an open position and a closed position, a lower frame defining a magazine well configured to removably receive a box magazine, the lower frame removably connected to the upper frame by a transverse takedown pin, an action lever movable between a retracted position and an extended position and having a first pivot, and pivotally connected to the lower frame at the first pivot, a first link pivotally connected to the lower frame, a second link pivotally connected to the bolt carrier assembly, the first link and second link pivotally interconnected to each other, the first link defining a cam path, and a cam follower on the action lever operably engaged to the cam path such that movement of the action lever generates movement of the bolt carrier assembly.

Lever action firearms have an upper frame defining a bolt passage, a bolt carrier assembly received in the upper frame and operable to reciprocate between an open position and a closed position, a lower frame defining a magazine well configured to removably receive a box magazine, the lower frame removably connected to the upper frame by a transverse takedown pin, an action lever movable between a retracted position and an extended position and having a first pivot, and pivotally connected to the lower frame at the first pivot, a first link pivotally connected to the lower frame, a second link pivotally connected to the bolt carrier assembly, the first link and second link pivotally interconnected to each other, the first link defining a cam path, and a cam follower on the action lever operably engaged to the cam path such that movement of the action lever generates movement of the bolt carrier assembly.