IP Library Granted Patent US 11,441,869
Granted Patent B2
US 11,441,869 · App. 17/359,884 · Granted Sep 13, 2022

Stabilizing brace assembly for a firearm

Inventor: Trent Zimmer (Broussard, LA)
F41C23/12F41A3/72F41A35/02F41C23/04F41C23/14F41G11/003
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Quick Facts
Patent No.
US 11,441,869
App. No.
17/359,884
Granted
Sep 13, 2022
Kind
B2
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 (40)

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.

2. 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.

3. 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.

4. The stabilizing brace assembly of claim 1 , further comprising a charging handle that can be used to manually operate the slide of the firearm.

5. The stabilizing brace assembly of claim 1 , wherein the chassis also includes a reciprocation channel for the slide of the firearm.

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.

7. 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.

8. The stabilizing brace assembly of claim 6 , further comprising a charging handle that can be used to manually operate the slide of the firearm.

9. 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.

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.

11. 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.

12. The stabilizing brace assembly of claim 10 , further comprising a charging handle that can be used to manually operate the slide of the firearm.

13. 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.

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.

15. 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.

16. 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.

17. The stabilizing brace assembly of claim 14 , further comprising a charging handle that can be used to manually operate the slide of the firearm.

18. 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.

Assignments (3)
SECURITY INTEREST Recorded May 12, 2026
From: SILENCERCO WEAPONS RESEARCH, LLC; UNITY TACTICAL LLC; ZEV TECHNOLOGIES, LLC; SYNDICATE OPTICS RESEARCH, LLC; SICOSYNDICATE, LLC
To: FIFTH THIRD BANK, NATIONAL ASSOCIATION
Reel/Frame 075562/0524 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2025
From: DIVISION GROUP, LLC
To: UNITY TACTICAL, LLC
Reel/Frame 073461/0037 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 10, 2025
From: ZIMMER, TRENT
To: DIVISION GROUP, LLC
Reel/Frame 071725/0587 →
Continuity (3)
Continuation 16390114 · Apr 22, 2019
Provisional Application 62661491 · Apr 23, 2018
Related Publication 20210396488A1 · Dec 23, 2021
Cited By (5)
US 1,069,016 US 12,546,548 US 12,571,601 US 12,663,236 US 12,687,363