# US 11,441,869 B2 · Stabilizing brace assembly for a firearm > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,441,869 B2 - Document ID: US11441869B2 - Status: Granted - Kind: B2 - Application number: 17/359,884 - Filed: 2021-06-28 - Published: 2021-12-23 - Granted: 2022-09-13 - Earliest claimed: 2018-04-23 - Applicants: Trent Zimmer - Inventors: Trent Zimmer - Web page: https://patentgrep.com/patent/US11441869B2 ## CPC - F41C 23/12: Auxiliary stocks for stabilising, or for transforming pistols, e.g. revolvers, into shoulder-fired guns - F41A 3/72: Operating handles or levers; Mounting thereof in breech-blocks or bolts {(F41C7/02, F41C7/06 take precedence)} - F41A 35/02: Dust- or weather-protection caps or covers (protecting-caps for trigger guards F41A17/54) - F41C 3/00: Pistols, e.g. revolvers (specially adapted for underwater use F41C9/06; for slaughtering or stunning animals A22B; for shooting bolts into concrete constructions, metal walls or the like B25C) - F41C 23/04: Folding or telescopic stocks or stock parts (articulated or collapsible guns F41A11/04) - F41G 11/001: {Means for mounting sighting or aiming devices on firearms} - F41C 23/14: Adjustable stock or stock parts, i.e. adaptable to personal requirements, e.g. length, pitch, cast or drop - F41G 11/003: {Mountings with a dove tail element, e.g. "Picatinny rail systems"} - F41C: SMALLARMS, e.g. PISTOLS, RIFLES (functional features or details common to both smallarms and ordnance, mountings therefor F41A; projecting missiles without use of explosive or combustible propellant charge F41B); ACCESSORIES THEREFOR - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE - F41G: WEAPON SIGHTS; AIMING (optical aspects thereof G02B) ## Abstract Implementations of a stabilizing brace assembly for a firearm are provided. The stabilizing brace assembly is configured for use in attaching a forearm stabilizing brace to a pistol, thereby providing additional stability to a user aiming and firing the pistol. In some implementations, the stabilizing brace assembly is also configured to position an optical sight (e.g., a reflex type sight) so that it can be used to aim the pistol. ## Claims ### Claim 1 A stabilizing brace assembly for use with a firearm comprising a slide and a frame, the frame of the firearm includes a grip and a dustcover, the stabilizing brace assembly comprising: a chassis configured to be attached to the frame of the firearm; a stabilizing brace secured to the chassis; and a backstrap assembly configured to be mounted to the grip of the frame and attached directly to the chassis; wherein: the chassis includes a mounting platform configured to position an optical sight mounted thereon over the slide of the firearm. ### Claim 2 (depends on 1) The stabilizing brace assembly of claim 1, further comprising a fastening pin configured to secure the backstrap assembly to the grip portion of the firearm, the fastening pin extends through a portion of the backstrap assembly and the grip portion of the frame. ### Claim 3 (depends on 1) The stabilizing brace assembly of claim 1, wherein the chassis also includes a clamp arm comprising a fixed bracket that is used in conjunction with an electronic device to secure the fixed bracket, and thereby the chassis, to the dustcover of the firearm. ### Claim 4 (depends on 1) The stabilizing brace assembly of claim 1, further comprising a charging handle that can be used to manually operate the slide of the firearm. ### Claim 5 (depends on 1) The stabilizing brace assembly of claim 1, wherein the chassis also includes a reciprocation channel for the slide of the firearm. ### Claim 6 A stabilizing brace assembly for use with a firearm comprising a barrel, a slide that houses at least a portion of the barrel, and a frame that includes a grip and a dustcover, the stabilizing brace assembly comprising: a chassis configured to be attached to the frame of the firearm; and a stabilizing brace secured to the chassis; wherein: the chassis is attached to the grip of the frame by a fastening pin that extends through a portion of the chassis and an upper area of the grip; the chassis includes a second point of attachment to the frame separate from the grip. ### Claim 7 (depends on 6) The stabilizing brace assembly of claim 6, further comprising a backstrap assembly configured to be mounted to the grip portion of the frame and attached directly to the chassis. ### Claim 8 (depends on 6) The stabilizing brace assembly of claim 6, further comprising a charging handle that can be used to manually operate the slide of the firearm. ### Claim 9 (depends on 6) The stabilizing brace assembly of claim 6, wherein the chassis includes a mounting platform configured to position an optical sight mounted thereon over the slide. ### Claim 10 A stabilizing brace assembly for use with a firearm comprising a barrel, a slide that houses at least a portion of the barrel, and a frame that includes a grip and a dustcover positioned underneath the barrel, the stabilizing brace assembly comprising: a chassis configured to be attached to the frame of the firearm by a fastener and a fastening pin; and a stabilizing brace secured to the chassis; wherein: the fastener extends through an opening in the chassis and a trigger pin hole in the frame of the firearm; and the fastening pin extends through a portion of the chassis and the grip of the firearm. ### Claim 11 (depends on 10) The stabilizing brace assembly of claim 10, further comprising a backstrap assembly configured to be mounted to the grip portion of the frame and attached directly to the chassis. ### Claim 12 (depends on 10) The stabilizing brace assembly of claim 10, further comprising a charging handle that can be used to manually operate the slide of the firearm. ### Claim 13 (depends on 10) The stabilizing brace assembly of claim 10, wherein the chassis includes a mounting platform configured to position an optical sight mounted thereon over the slide. ### Claim 14 A stabilizing brace assembly for use with a firearm comprising a slide and a frame, the frame of the firearm includes a grip and a dustcover, the stabilizing brace assembly comprising: a chassis configured to be attached to the frame of the firearm; and a stabilizing brace secured to the chassis; wherein: the chassis includes a clamp arm comprising a fixed bracket configured to be used in conjunction with a clamp member of an electronic device to form a clamping arrangement; the clamping arrangement is configured to attach the fixed bracket, and thereby the chassis, to the dustcover of the firearm; the chassis includes a second point of attachment to the frame of the firearm separate from the clamping arrangement. ### Claim 15 (depends on 14) The stabilizing brace assembly of claim 14, further comprising a fastening pin configured to secure the chassis to the grip portion of the firearm, the fastening pin extends through a portion of the chassis and the grip portion of the frame. ### Claim 16 (depends on 14) The stabilizing brace assembly of claim 14, further comprising a backstrap assembly configured to be mounted to the grip portion of the frame and attached directly to the chassis. ### Claim 17 (depends on 14) The stabilizing brace assembly of claim 14, further comprising a charging handle that can be used to manually operate the slide of the firearm. ### Claim 18 (depends on 14) The stabilizing brace assembly of claim 14, wherein the chassis includes a mounting platform configured to position an optical sight mounted thereon over the slide.