# US 2016/0258696 A1 · Bolt releases and firearms including such bolt releases > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0258696 A1 - Document ID: US20160258696A1 - Status: Published application - Kind: A1 - Application number: 14/656,688 - Filed: 2015-03-12 - Published: 2016-09-08 - Earliest claimed: 2012-10-02 - Assignees: Heckler & Koch GmbH - Applicants: Heckler & Koch GmbH - Inventors: Norbert Fluhr; Daniel Kohler - Web page: https://patentgrep.com/patent/US20160258696A1 ## CPC - F41A 3/42: hand-operated - F41A 3/66: Breech housings or frames; Receivers - F41A 17/36: locking the gun {automatically} in a safety condition when the magazine is empty or removed {(F41A17/44 takes precedence)} - F41A 17/42: Safeties for locking the breech-block or bolt in a safety position (F41A17/32, F41A17/36, F41A17/40 take precedence {; anti-rebound arrangements F41A3/70}) - 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 Magazine release apparatus and firearms including such magazine release apparatus are disclosed. An example bolt release for use with a firearm includes a first handle to protrude from a first side of the firearm and a second handle to protrude from a second side of the firearm. The first and second handles are integral. The first and second handles are to enable the bolt release to be operable from the first and second sides of the firearm. The bolt release includes a pivot axis adjacent the first side or the second side. The pivot axis is to enable the bolt release to be pivoted between a release position and a retained position. The bolt release to be biased toward the release position ## Claims ### Claim 1 A bolt release for use with a firearm, comprising: a first handle to protrude from a first side of the firearm; a second handle to protrude from a second side of the firearm, the first and second handles being integral, the first and second handles to enable the bolt release to be operable from the first and second sides of the firearm, wherein the bolt release comprises a pivot axis adjacent the first side or the second side, the pivot axis to enable the bolt release to be pivoted between a release position and a retained position, the bolt release is to be biased toward the release position. ### Claim 2 (depends on 1) The bolt release of claim 1, wherein the bolt release is to be biased toward the release position by a spring. ### Claim 3 (depends on 1) The bolt release of claim 1, wherein the bolt release comprises a protrusion to extend into a magazine chamber of the firearm, the protrusion to be engaged by a cartridge loader of a magazine when the magazine is empty, the engagement between the protrusion and the cartridge loader to actuate the bolt release from the release position to the retained position. ### Claim 4 (depends on 1) The bolt release of claim 1, further comprising a third handle, wherein the first and third handles are proximate the pivot axis and the second handle is distal to the pivot axis. ### Claim 5 (depends on 5) The bolt release of claim 5, wherein the bolt release is to be actuated between the release position and the retained position using the first handle, the second handle, or the third handle. ### Claim 6 (depends on 5) The bolt release of claim 5, wherein the bolt release is to be actuated from the release position to the retained position using the first handle, the second handle, or the third handle. ### Claim 7 (depends on 5) The bolt release of claim 5, wherein the bolt release is to be actuated from the retained position to the release position using the first handle, the second handle, or the third handle. ### Claim 8 (depends on 1) The bolt release of claim 1, wherein the first handle comprises surface structures or a slip-resistant coating. ### Claim 9 (depends on 1) The bolt release of claim 1, wherein the bolt release comprises a retrofit bolt release. ### Claim 10 A firearm, comprising: a receiver; and a bolt release disposed in the receiver, the bolt release comprising: a first handle to protrude from a first side of the firearm; a second handle to protrude from a second side of the firearm, the first and second handles being integral, the first and second handles to enable the bolt release to be operable from the first and second sides of the firearm, wherein the bolt release comprises a pivot axis adjacent the first side or the second side, the pivot axis to enable the bolt release to be pivoted between a release position and a retained position, the bolt release being biased toward the release position. ### Claim 11 (depends on 10) The firearm of claim 10, wherein the bolt release is to be biased toward the release position by a spring. ### Claim 12 (depends on 10) The firearm of claim 10, wherein the bolt release comprises a protrusion to extend into a magazine chamber of the firearm, the protrusion to be engaged by a cartridge loader of a magazine when the magazine is empty, the engagement between the protrusion and the cartridge loader to actuate the bolt release from the release position to the retained position. ### Claim 13 (depends on 10) The firearm of claim 10, further comprising a third handle, wherein the first and third handles are proximate the pivot axis and the second handle is distal to the pivot axis. ### Claim 14 (depends on 13) The firearm of claim 13, wherein the bolt release is to be actuated between the release position and the retained position using the first handle, the second handle, or the third handle. ### Claim 15 (depends on 13) The firearm of claim 13, wherein the bolt release is to be actuated from the release position to the retained position using the first handle, the second handle, or the third handle. ### Claim 16 (depends on 13) The firearm of claim 13, wherein the bolt release is to be actuated from the retained position to the release position using the first handle, the second handle, or the third handle. ### Claim 17 (depends on 10) The firearm of claim 10, wherein the first handle comprises surface structures or a slip-resistant coating. ### Claim 18 A receiver, comprising: a lower receiver; and a bolt release disposed in the lower receiver, the bolt release comprising: a first handle to protrude from a first side of the lower receiver; a second handle to protrude from a second side of the lower, the first and second handles being integral, the first and second handles to enable the bolt release to be operable from the first and second sides of the lower receiver, wherein the bolt release comprises a pivot axis adjacent the first side or the second side, the pivot axis to enable the bolt release to be pivoted between a release position and a retained position, the bolt release being biased toward the release position. ### Claim 19 (depends on 18) The receiver of claim 18, wherein the lower receiver comprises a protrusion to substantially protect the first handle or the second handle against damage or accidental actuation. ### Claim 20 (depends on 18) The receiver of claim 18, wherein, in the release position, the bolt release is to enable a bolt of a firearm to oscillate between a rearward position and a forward position, in the retained position, the bolt release to retain the bolt adjacent the rearward position. ### Claim 21 A bolt release for use with a firearm, comprising: a first handle to protrude from a first side of the firearm; a second handle to protrude from a second side of the firearm, the first and second handles to enable the bolt release to be operable from the first and second sides of the firearm; an elongated portion coupling the first and second handles, wherein a chamfer is defined between the first handle and the elongated portion to substantially reduce a likelihood of contaminants affecting a pivotal movement of the bolt release, a pivot axis is defined adjacent the chamfer and the first lever, the pivot axis to enable the bolt release to be pivoted between a release position and a retained position, the bolt release is to be biased toward the release position, the first handle, the second handle and the elongated portion being integral; and a protrusion to extend into a magazine chamber of the firearm, the protrusion to be engaged by a cartridge loader of a magazine when the magazine is empty, the engagement between the protrusion and the cartridge loader to actuate the bolt release from the release position to the retained position.