# US 9,599,419 B2 · Ambidextrous bolt catch and firearm > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,599,419 B2 - Document ID: US9599419B2 - Status: Granted - Kind: B2 - Application number: 14/945,131 - Filed: 2015-11-18 - Published: 2016-04-28 - Granted: 2017-03-21 - Earliest claimed: 2014-01-10 - Assignees: Falkor Sid, Inc. - Applicants: Falkor Sid, Inc. - Inventors: Aaron A. McGinty - Web page: https://patentgrep.com/patent/US9599419B2 ## CPC - F41A 3/42: hand-operated - F41A 3/12: Bolt action, i.e. the main breech opening movement being parallel to the barrel axis - F41A 3/72: Operating handles or levers; Mounting thereof in breech-blocks or bolts {(F41C7/02, F41C7/06 take precedence)} - F41A 9/59: Ejectors for clips or magazines, e.g. when empty - F41A 17/36: locking the gun {automatically} in a safety condition when the magazine is empty or removed {(F41A17/44 takes precedence)} - F41A 17/38: {Magazine mountings, e.g. for} locking the magazine in the gun - F41A 35/06: Adaptation of guns to both right and left hand use - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## Abstract Firearms where the bolt catch can be released from either side using the same or a substantially similar motion using contact features that look, feel, or operate similarly on both sides, that are located within the firearm rather than externally, that can be used more easily or reliably, or a combination thereof. In some embodiments, a bolt catch engagement feature, magazine release mechanism, or both, are also (e.g., similarly) ambidextrous. In many embodiments, a user action on one side of the firearm is substantially similar to, but in the opposite direction from, a user action on the other side that performs the same function. In various embodiments, a left button, pad, or feature is directly opposite and in line with a right button, pad, or feature. Bolt catches can use two levers and magazine release mechanisms can use two parallel elongated members perpendicular to the barrel and a catch actuator. ## Claims ### Claim 1 A firearm comprising: a left side; a right side opposite the left side; at least one of a bolt or a carrier; a bolt catch that holds the bolt or the carrier in a retracted position; a left bolt release feature at the left side; and a right bolt release feature at the right side; wherein the left bolt release feature is actuated with a first user action to release the bolt catch; wherein the right bolt release feature is actuated with a second user action to release the bolt catch; wherein the first user action and the second user action are substantially similar but in opposite directions; a left bolt engagement feature at the left side; a right bolt engagement feature at the right side; wherein the left bolt engagement feature is actuated with a third user action; wherein the right bolt engagement feature is actuated with a fourth user action; and wherein the third user action and the fourth user action are substantially similar but in opposite directions. ### Claim 2 (depends on 1) The firearm of claim 1 further comprising: wherein the first user action is an application of a first pushing force substantially perpendicular to the left side of the firearm; and wherein the second user action is an application of a second pushing force substantially perpendicular to the right side of the firearm. ### Claim 3 (depends on 1) The firearm of claim 1 further comprising: wherein the left bolt release feature comprises a left bolt release pad at the left side; wherein the right bolt release feature comprises a right bolt release pad at the right side; and wherein the left bolt release pad is substantially opposite the right bolt release pad. ### Claim 4 (depends on 3) The firearm of claim 3 further comprising: a left bolt engagement feature at the left side; a right bolt engagement feature at the right side; wherein the left bolt engagement feature is actuated with a third user action; wherein the right bolt engagement feature is actuated with a fourth user action; wherein the third user action and the fourth user action are substantially similar, but in opposite directions; and wherein the left bolt engagement feature is substantially opposite the right bolt engagement feature. ### Claim 5 A firearm with an ambidextrous bolt control comprising: a frame defining an bolt passage and opposed right and left sides; a bolt operable to reciprocate in the bolt passage between a forward battery position and a rearward retracted position; a bolt catch attached to the frame; the bolt catch having a bolt engagement portion proximate the bolt passage; the bolt catch being movable between a restraint position in which the bolt engagement portion extends into the passage to retrain the bolt in the retracted position, and a release position in which the bolt engagement portion is clear of the passage to enable the bolt to move from the rearward retracted position to the forward battery position; the bolt catch having a primary release actuation surface exposed on a selected one of the right and left sides of the frame; a secondary bolt catch actuator connected to the frame and movable between a first position and a second position; the secondary bolt catch actuator having a secondary release actuation surface exposed on the opposite side of the frame from the primary release actuation surface; wherein the primary release actuation surface and the secondary release actuation surface are symmetrically positioned in registration with each other on opposite sides of the frame; the secondary bolt catch actuator being operably engaged to the bolt catch; and the bolt catch being responsive to movement of the secondary bolt catch actuator from the first position to the second position to move from the restraint position to the release position, such that the bolt may be released from either side of the rifle. ### Claim 6 (depends on 5) The firearm of claim 5 wherein the primary release actuation surface and the secondary release actuation surface are positioned in registration with each at the same position along the length of the firearm on opposed sides of the frame. ### Claim 7 (depends on 5) The firearm of claim 5 wherein the primary release actuation surface and the secondary release actuation surface are symmetrically positioned in vertical registration with each other at the same vertical level on opposed sides of the frame. ### Claim 8 (depends on 5) The firearm of claim 5 wherein each of the bolt catch and the secondary bolt catch actuator are pivotally connected to the frame at spaced apart pivot axes. ### Claim 9 (depends on 8) The firearm of claim 8 wherein the pivot axes are symmetrically positioned equidistant from a medial plane of the firearm. ### Claim 10 (depends on 5) The firearm of claim 5 wherein the bolt catch and the secondary bolt catch actuator are operably engaged with each other such that movement by either in either direction compels movement by the other. ### Claim 11 (depends on 5) The firearm of claim 5 wherein at least one of the bolt catch and the secondary bolt catch actuator are biased toward the release position. ### Claim 12 (depends on 11) The firearm of claim 11 wherein each of the bolt catch and the secondary bolt catch actuator are biased toward the release position by a respective spring. ### Claim 13 (depends on 5) The firearm of claim 5 wherein a first one of the bolt catch and the bolt catch actuator defines a receptacle, and a second one of the bolt catch and the bolt catch actuator has a protrusion received in the receptacle. ### Claim 14 (depends on 5) The firearm of claim 5 wherein the bolt catch and the secondary bolt catch actuator each have an extension element extending medially into the firearm, and the extension elements engaging each other at a zone of contact proximate to a midline plane of the firearm, such that angular movement of the catch and catch actuator are equivalent. ### Claim 15 (depends on 5) The firearm of claim 5 wherein the zone of contact, the primary release actuation surface, and the secondary release actuation surface are in a common plane perpendicular to a major axis of the firearm. ### Claim 16 A firearm with an ambidextrous bolt control comprising: a frame defining a bolt passage and opposed right and left sides; a bolt operable to reciprocate in the bolt passage between a forward battery position and a rearward retraced position; a bolt catch attached to the frame; the bolt catch having a bolt engagement portion proximate the bolt passage; the bolt catch being movable between a restraint position in which the bolt engagement portion extends into the passage to retrain the bolt in the retracted position, and a release position in which the bolt engagement portion is clear of the passage to enable the bolt to from the rearward retracted position to the forward battery position; the bolt catch having a primary release actuation surface exposed on a selected one of the right and left sides of the frame; a secondary bolt catch actuator connected to the frame and movable between a first position and a second position; the secondary bolt catch actuator having a secondary release actuation surface exposed on the opposite side of the frame from the primary release actuation surface; the bolt catch being responsive to movement of the secondary bolt catch actuator from the first position to the second position to move from the restraint position to the release position, such that the bolt may be released from either side of the rifle; wherein the bolt catch has a primary catch actuation surface spaced apart from the primary release actuation surface and the secondary bolt catch actuator has an actuator catch actuation surface spaced apart from the secondary release actuation surface, and; the bolt catch and the secondary bolt catch actuator are operably engaged to each other to move the bolt catch to the restraint position in response to application of pressure on either one of the primary catch actuation surface and the actuator catch actuation surface. ### Claim 17 (depends on 16) The firearm of claim 16 wherein the primary catch actuation surface and the actuator catch actuation surface are symmetrically positioned in registration with each other on opposite sides of the frame. ### Claim 18 (depends on 17) The firearm of claim 17 wherein the primary release actuation surface and the secondary release actuation surface are symmetrically positioned in registration with each other on opposite sides of the frame. ### Claim 19 (depends on 16) The firearm of claim 16 wherein the release actuation surface and the secondary release actuation surface are positioned at a level vertically above the catch actuation surface and the actuator catch actuation surface. ### Claim 20 (depends on 16) The firearm of claim 16 wherein the release actuation surface and the secondary release actuation surface each have a selected first contact surface area, and the catch actuation surface and the actuator catch actuation surface each have a selected second contact surface area less than the first contact surface area.