# US 10,871,340 B2 · Fire control group > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,871,340 B2 - Document ID: US10871340B2 - Status: Granted - Kind: B2 - Application number: 16/655,145 - Filed: 2019-10-16 - Published: 2020-04-23 - Granted: 2020-12-22 - Earliest claimed: 2018-10-17 - Assignees: Franklin Armory Holdings, Inc. - Applicants: Franklin Armory Holdings, Inc. - Inventors: Ryan Paul Fellows - Web page: https://patentgrep.com/patent/US10871340B2 ## CPC - F41A 19/15: Modular firing mechanism units - F41A 11/00: Assembly or disassembly features; Modular concepts; Articulated or collapsible guns (F41A3/64, F41A19/10 - F41A19/15, F41A21/48, F41A25/26 take precedence) - F41A 19/16: Adjustable firing mechanisms; Trigger mechanisms with adjustable trigger pull (F41A19/17 takes precedence) - F41A 19/43: in bolt-action guns - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## Abstract A fire control group has a receiver having opposed sidewalls defining a space configured to receive a fire control group, the opposed sidewalls each defining a pivot pin aperture, the pivot pin apertures being registered with each other, a fire control group including a trigger received in the space, the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver, the fire control group including a pivoting operational element, the fire control group including a pivot pin supporting the pivoting operational element and received in the transverse pivot pin passage and the pivot pin apertures, the firearm having a hand grip aft of the trigger and defining a screw aperture, and a grip screw engaging the hand grip and engaging the fire control group. The grip screw may occupy a medial plane of the firearm. ## Claims ### Claim 1 A firearm comprising: a receiver having opposed sidewalls defining a space configured to receive a fire control group; the opposed sidewalls each defining a pivot pin aperture; the pivot pin apertures being registered with each other; a fire control group including a trigger received in the space; the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver; the fire control group including a pivoting operational element; the fire control group including a pivot pin supporting the pivoting operational element and received in the pivot pin passage and the pivot pin apertures; the firearm having a hand grip aft of the trigger and defining a screw aperture; a grip screw engaging the hand grip and engaging the fire control group; and wherein the fire control group defines a threaded aperture receiving the grip screw. ### Claim 2 (depends on 1) The firearm of claim 1 wherein the grip screw occupies a medial plane of the firearm. ### Claim 3 (depends on 1) The firearm of claim 1 wherein the grip screw defines a screw axis perpendicular to the pivot pin. ### Claim 4 (depends on 1) The firearm of claim 1 wherein the firearm control group includes an adjustable downwardly extending set screw configured to establish a pitch orientation of the fire control group. ### Claim 5 (depends on 1) The firearm of claim 1 wherein the firearm control group includes an adjustable downwardly extending set screw configured to establish an elevation of at least a portion of the fire control group. ### Claim 6 (depends on 5) The firearm of claim 5 wherein the set screw is adjacent to the grip screw. ### Claim 7 (depends on 5) The firearm of claim 5 wherein the set screw is spaced apart from the pivot pin. ### Claim 8 (depends on 1) The firearm of claim 1 wherein the pivoting operational element supported by the pivot pin is a hammer. ### Claim 9 (depends on 1) The firearm of claim 1 wherein the fire control group defines a trigger pivot passage receiving a trigger pivot pin and the trigger is supported by the trigger pin, and therein the trigger pin has a limited length that does not engage the receiver. ### Claim 10 (depends on 9) The firearm of claim 9 wherein the receiver defines a trigger pin aperture that is independently located with respect to the trigger pin. ### Claim 11 (depends on 9) The firearm of claim 9 including a plug received in the trigger pin aperture. ### Claim 12 (depends on 11) The firearm of claim 11 wherein the plug has an inner face spaced apart from an inner surface of the receiver sidewall to establish a lateral positional limit for the fire control group. ### Claim 13 (depends on 9) The firearm of claim 9 wherein the trigger pin ends are flush with the fire control group. ### Claim 14 (depends on 9) The firearm of claim 9 wherein the trigger pin is received between the opposed sidewalls of the receiver. ### Claim 15 (depends on 9) The firearm of claim 9 wherein the pivot pin supporting the pivoting operational element is longer than the trigger pin. ### Claim 16 (depends on 1) The firearm of claim 1 including only a single transverse pin engaging both the receiver and the fire control group. ### Claim 17 (depends on 1) The firearm of claim 1 wherein the hand grip defines a primary grip axis and the grip screw is perpendicular to the primary grip axis. ### Claim 18 (depends on 1) The firearm of claim 1 wherein a portion of the receiver is compressively received between the hand grip and the fire control group. ### Claim 19 A trigger module for a firearm having a receiver with opposed receiver sidewalls defining a plurality of pin apertures, the module comprising: a module housing having module sidewalls with opposed parallel external wall surfaces defining a module width; a hammer pin extending transversely though the module sidewalls and having a length greater than the module width such that the hammer pin ends are configured to be received in opposed pin apertures of the receiver; the module housing defining a threaded aperture at a rear portion of the module housing; the threaded aperture being oriented to receive a grip screw received by and engaging a grip to secure the rear portion of the module housing. ### Claim 20 A firearm comprising: a receiver having opposed sidewalls defining a space configured to removably receive a fire control group; the opposed sidewalls each defining a pivot pin aperture; the pivot pin apertures being registered with each other; a fire control group including a trigger received in the space; the fire control group defining a transverse pivot pin passage configured to be registered with the pivot pin apertures of the receiver; the fire control group including a pivoting operational element; the fire control group including a pivot pin supporting the pivoting operational element and received in the pivot pin passage and the pivot pin apertures; the firearm having a hand grip aft of the trigger and defining a screw aperture; a grip screw engaging the hand grip and engaging the fire control group; wherein the receiver has a wall portion received between the hand grip and the fire control group; and wherein the wall portion is compressibly received between the hand grip and the fire control group. ### Claim 21 (depends on 20) The firearm of claim 20 wherein the receiver defines an aperture receiving a fastener interconnecting the grip and the fire control group. ### Claim 22 (depends on 21) The firearm of claim 21 wherein the fastener includes a threaded portion. ### Claim 23 (depends on 20) The firearm of claim 20 wherein the grip screw occupies a medial plane of the firearm. ### Claim 24 (depends on 20) The firearm of claim 20 wherein the grip screw defines a screw axis perpendicular to the pivot pin. ### Claim 25 (depends on 20) The firearm of claim 20 wherein the fire control group defines a threaded aperture receiving the grip screw. ### Claim 26 (depends on 20) The firearm of claim 20 wherein the firearm control group includes an adjustable downwardly extending set screw configured to establish a pitch orientation of the fire control group. ### Claim 27 (depends on 20) The firearm of claim 20 wherein the firearm control group includes an adjustable downwardly extending set screw configured to establish an elevation of at least a portion of the fire control group. ### Claim 28 (depends on 27) The firearm of claim 27 wherein the set screw is adjacent to the grip screw. ### Claim 29 (depends on 27) The firearm of claim 27 wherein the set screw is spaced apart from the pivot pin. ### Claim 30 (depends on 20) The firearm of claim 20 wherein the pivoting operational element supported by the pivot pin is a hammer. ### Claim 31 (depends on 20) The firearm of claim 20 wherein the fire control group defines a trigger pivot passage receiving a trigger pivot pin and the trigger is supported by the trigger pin, and therein the trigger pin has a limited length that does not engage the receiver. ### Claim 32 (depends on 31) The firearm of claim 31 wherein the receiver defines a trigger pin aperture that is independently located with respect to the trigger pin. ### Claim 33 (depends on 31) The firearm of claim 31 including a plug received in the trigger pin aperture. ### Claim 34 (depends on 33) The firearm of claim 33 wherein the plug has an inner face spaced apart from an inner surface of the receiver sidewall to establish a lateral positional limit for the fire control group. ### Claim 35 (depends on 31) The firearm of claim 31 wherein the trigger pin ends are flush with the fire control group. ### Claim 36 (depends on 31) The firearm of claim 31 wherein the trigger pin is received between the opposed sidewalls of the receiver. ### Claim 37 (depends on 31) The firearm of claim 31 wherein the pivot pin supporting the pivoting operational element is longer than the trigger pin. ### Claim 38 (depends on 20) The firearm of claim 20 including only a single transverse pin engaging both the receiver and the fire control group. ### Claim 39 (depends on 20) The firearm of claim 20 wherein the hand grip defines a primary grip axis and the grip screw is perpendicular to the primary grip axis. ### Claim 40 (depends on 20) The firearm of claim 20 wherein a portion of the receiver is compressively received between the hand grip and the fire control group.