US Patent 9651328 Ambidextrous bolt release for a lower receiver

An ambidextrous bolt release that includes an ambidextrous bolt release lever; a bolt catch pivotable about a bolt catch pivot aperture between a bolt engagement and a bolt release position, wherein the bolt catch comprises a bolt engagement projection, and wherein the bolt catch comprises a bolt catch projection; and a connector bar extending from a first into a second end and attached or coupled between the ambidextrous bolt release lever and the bolt catch, such that vertical movement of the ambidextrous bolt release lever results in vertical movement of the connector bar and rotation of the bolt catch.