# US 9,435,593 B2 · Charging handle engagement with carrier key of firearm > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,593 B2 - Document ID: US9435593B2 - Status: Granted - Kind: B2 - Application number: 14/632,706 - Filed: 2015-02-26 - Published: 2016-03-17 - Granted: 2016-09-06 - Earliest claimed: 2013-12-23 - Assignees: Falkor Sid, Inc. - Applicants: S. I. Defense, Inc. - Inventors: Aaron A. McGinty - Web page: https://patentgrep.com/patent/US9435593B2 ## CPC - F41A 3/72: Operating handles or levers; Mounting thereof in breech-blocks or bolts {(F41C7/02, F41C7/06 take precedence)} - F41A 5/24: by direct action of gas pressure on bolt or locking elements - F41A 5/28: Adjustable systems - 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 that pull back the carrier using a charging handle and carriers and charging handles for firearms. In various embodiments, the charging handle engages the carrier at a gas key or tab thereon. In some embodiments, the charging handle has a bridge or engagement face located between a rearward end and a forward end of the charging handle. In particular embodiments, the bridge extends from a left wall to a right wall of the charging handle. In some embodiments, the bridge, the left wall, the right wall, and a top wall are all one piece and a stem of the charging handle has an open bottom between the left and right walls. In various embodiments, the bridge does not extend below the left or right wall, the tab on the gas key extends upward between the left and right walls to engage the bridge on the charging handle, or both. ## Claims ### Claim 1 A firearm comprising a charging handle and a carrier having a gas key wherein: the charging handle engages the carrier at the gas key; the charging handle comprises a stem comprising a left wall, a right wall, and a bridge that extends from the left wall to the right wall; the bridge engages the gas key; the bridge does not extend below the left wall; and the bridge does not extend below the right wall. ### Claim 2 (depends on 1) The firearm of claim 1 wherein the gas key comprises a tab that engages the charging handle. ### Claim 3 (depends on 2) The firearm of claim 2 wherein: the charging handle comprises a stem comprising a left wall, a right wall, and a bridge that extends from the left wall to the right wall; and the tab extends between the left wall and the right wall to engage the bridge. ### Claim 4 (depends on 1) The firearm of claim 1 wherein: the charging handle comprises a stem comprising a top wall, a left wall attached to the top wall, and a right wall attached to the top wall, and a bridge that extends from the left wall to the right wall; and the bridge engages the gas key. ### Claim 5 (depends on 4) The firearm of claim 4 wherein: the left wall, the top wall, and the right wall are all one piece; the left wall is substantially perpendicular to the top wall; the right wall is substantially perpendicular to the top wall; and the left wall is substantially parallel to the right wall. ### Claim 6 (depends on 4) The firearm of claim 4 wherein: the bridge, the left wall, the right wall, and the top wall are all one piece; and the stem has an open bottom between the left wall and the right wall. ### Claim 7 (depends on 4) The firearm of claim 4 wherein the bridge is perpendicular to the left wall and to the right wall. ### Claim 8 (depends on 4) The firearm of claim 4 wherein the bridge extends to the top wall. ### Claim 9 (depends on 4) The firearm of claim 4 wherein: the bridge comprises an engagement face that engages the gas key; and the engagement face is concave. ### Claim 10 (depends on 1) The firearm of claim 1 wherein: the charging handle has a rearward first end, a forward second end, and a length from the first end to the second end; and the charging handle engages the gas key at least 10 percent of the length from the second end of the charging handle. ### Claim 11 (depends on 10) The firearm of claim 10 wherein the bridge engages the gas key at least 50 percent of the length from the first end of the charging handle. ### Claim 12 (depends on 11) The firearm of claim 11 wherein: the charging handle comprises a stem comprising a top wall, a left wall attached to the top wall, a right wall attached to the top wall, and a bridge that extends from the left wall to the right wall; the left wall is substantially perpendicular to the top wall; the right wall is substantially perpendicular to the top wall; the left wall is substantially parallel to the right wall; the bridge, the left wall, the right wall, and the top wall are all one piece; the stem has an open bottom between the left wall and the right wall; the bridge extends to the top wall; and the bridge comprises an engagement face that engages the gas key. ### Claim 13 (depends on 1) The firearm of claim 1 wherein the firearm is an AR-15. ### Claim 14 A charging handle for a firearm having a carrier having a gas key, the charging handle comprising: an engagement face that engages the carrier at the gas key; the charging handle comprises a stem comprising a left wall, a right wall, and a bridge that extends from the left wall to the right wall; the bridge engages the gas key; the left wall is substantially parallel to the right wall; the bridge does not extend below the left wall; and the bridge does not extend below the right wall. ### Claim 15 (depends on 14) The charging handle of claim 14 wherein the charging handle engages a tab on the gas key. ### Claim 16 (depends on 14) The charging handle of claim 14 wherein: the charging handle comprises a stem comprising a top wall, a left wall attached to the top wall, a right wall attached to the top wall, and a bridge that extends from the left wall to the right wall; the bridge engages the gas key; the left wall is substantially perpendicular to the top wall; the right wall is substantially perpendicular to the top wall; the left wall is substantially parallel to the right wall; the bridge, the left wall, the right wall, and the top wall are all one piece; and the stem has an open bottom between the left wall and the right wall. ### Claim 17 A carrier for a firearm having a charging handle, the carrier comprising: a gas key comprising a tab that engages the charging handle of the firearm; and the charging handle comprises a stem comprising a left wall, a right wall, and a bridge that extends from the left wall to the right wall; and the tab on the gas key of the carrier extends upward between the left wall and the right wall to engage the bridge on the charging handle.