IP Library Granted Patent US 12,442,621
Granted Patent B2
US 12,442,621 · App. 18/438,585 · Granted Oct 14, 2025

Firearm sight mounting plate assembly

Inventors: Randy Paul Niswander (Oxnard, CA); Michael Lee Parks (Eagle, ID)
Assignee: AGENCY ARMS, LLC
F41G1/26
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Quick Facts
Patent No.
US 12,442,621
App. No.
18/438,585
Granted
Oct 14, 2025
Kind
B2
Abstract

A firearm mounting plate assembly is provided. The firearm mounting plate assembly includes a firearm slide with a first side, a second side, and a top side. A recess defined by a first slide wall, a second slide wall, and a recess base surface is disposed on the firearm slide top side. The recess includes a rib, a slot, and an ejector projection. The firearm mounting plate assembly includes a mounting plate with a top surface, a bottom surface, a front side, and a rear side. An ejector notch and a channel is disposed along the bottom surface. The mounting plate includes a stud, and one or more bosses. The mounting plate is configured to secure within the recess of the firearm slide.

Claims (57)

1. A mounting plate configured to attach to a slide of a firearm, the mounting plate comprising:

a top surface, an opposed bottom surface, a front side configured to face toward a front end of the firearm, and a rear side configured to face toward a rear end of the firearm;

a first plate wall adjacent to the front side of the mounting plate;

a second plate wall adjacent to the rear side of the mounting plate; and

a first slot defined in the first plate wall and a second slot defined in the second plate wall and configured to receive corresponding structure of an optic, wherein the first slot and the second slot are symmetrically aligned with one another along a longitudinal axis of the mounting plate.

2. The mounting plate of claim 1 , wherein the first plate wall and the second plate wall each extend above the top surface.

3. The mounting plate of claim 1 , wherein:

the first slot extends from a rear surface of the first plate wall toward the front side of the mounting plate and from a top surface of the first plate wall toward the opposed bottom surface of the mounting plate; and

the second slot extends from a front surface of the second plate wall toward the rear side of the mounting plate and from a top surface of the second plate wall toward the opposed bottom surface of the mounting plate.

4. The mounting plate of claim 1 , further comprising a stud extending from the rear side of the mounting plate.

5. The mounting plate of claim 1 , further comprising a plurality of angled edges each extending above the top surface and configured to engage corresponding structure of the optic.

6. The mounting plate of claim 5 , further comprising an intersecting channel extending between a pair of the angled edges and configured to engage corresponding structure of the optic.

7. The mounting plate of claim 1 , further comprising a channel disposed on the opposed bottom surface of the mounting plate, wherein the channel extends from the front side to the rear side of the mounting plate.

8. The mounting plate of claim 1 , further comprising an ejector notch disposed on the opposed bottom surface of the mounting plate.

9. The mounting plate of claim 1 , further comprising one or more apertures extending through the mounting plate from the top surface to the opposed bottom surface.

10. A firearm sight mounting plate assembly for a firearm, comprising:

a firearm slide comprising:

a top side, a first side configured to face toward a front end of the firearm, and a second side configured to face toward a rear end of the firearm;

a recess disposed on the top side of the firearm slide, the recess comprising:

a first slide wall, a second slide wall, and a recess base surface defining the recess; and

a rib extending along the recess base surface;

a mounting plate configured to attach to the firearm slide, the mounting plate comprising:

a top surface, an opposed bottom surface, a front side configured to face toward the front end of the firearm, and a rear side configured to face toward the rear end of the firearm;

a first plate wall adjacent to the front side of the mounting plate;

a second plate wall adjacent to the rear side of the mounting plate;

a first slot defined in the first plate wall and a second slot defined in the second plate wall and configured to receive corresponding structure of an optic, wherein the first slot and the second slot are symmetrically aligned with one another along a longitudinal axis of the mounting plate; and

a channel disposed on the opposed bottom surface of the mounting plate and configured to receive the rib.

11. The firearm sight mounting plate assembly of claim 10 , wherein:

the first slot extends from a rear surface of the first plate wall toward the front side of the mounting plate and from a top surface of the first plate wall toward the opposed bottom surface of the mounting plate; and

the second slot extends from a front surface of the second plate wall toward the rear side of the mounting plate and from a top surface of the second plate wall toward the opposed bottom surface of the mounting plate.

12. The firearm sight mounting plate assembly of claim 10 , wherein:

the firearm slide further comprises a slide slot disposed within the recess; and

the mounting plate further comprises a stud configured to engage the slide slot.

13. The firearm sight mounting plate assembly of claim 10 , wherein:

the firearm slide further comprises an ejector projection disposed adjacent to the rib; and

the mounting plate further comprises an ejector notch disposed on the opposed bottom surface of the mounting plate and configured to receive the ejector projection.

14. A firearm sight mounting plate assembly for a firearm, comprising:

a firearm slide comprising:

a top side, a first side configured to face toward a front end of the firearm, and a second side configured to face toward a rear end of the firearm;

a recess disposed on the top side of the firearm slide, the recess comprising:

a first slide wall, a second slide wall, and a recess base surface defining the recess; and

a slide slot disposed within the recess;

a mounting plate configured to attach to the firearm slide, the mounting plate comprising:

a top surface, an opposed bottom surface, a front side configured to face toward the front end of the firearm, and a rear side configured to face toward the rear end of the firearm;

a first plate wall adjacent to the front side of the mounting plate;

a second plate wall adjacent to the rear side of the mounting plate;

a first slot defined in the first plate wall a second slot defined in the second plate wall and configured to receive corresponding structure of an optic, wherein the first slot and the second slot are symmetrically aligned with one another along a longitudinal axis of the mounting plate; and

a stud configured to engage the slide slot.

15. The firearm sight mounting plate assembly of claim 14 , wherein:

the first slot extends from a rear surface of the first plate wall toward the front side of the mounting plate and from a top surface of the first plate wall toward the opposed bottom surface of the mounting plate; and

the second slot extends from a front surface of the second plate wall toward the rear side of the mounting plate and from a top surface of the second plate wall toward the opposed bottom surface of the mounting plate.

16. The firearm sight mounting plate assembly of claim 14 , wherein:

the firearm slide further comprises a rib extending along the recess base surface; and

the mounting plate further comprises a channel disposed on the opposed bottom surface of the mounting plate and configured to receive the rib.

17. The firearm sight mounting plate assembly of claim 16 , wherein:

the firearm slide further comprises an ejector projection disposed adjacent to the rib; and

the mounting plate further comprises an ejector notch disposed on the opposed bottom surface of the mounting plate and configured to receive the ejector projection.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 14, 2024
From: NISWANDER, RANDY PAUL; PARKS, MICHAEL LEE
To: AGENCY ARMS, LLC
Reel/Frame 066762/0901 →
Continuity (3)
Continuation 17499084 · Oct 12, 2021
Provisional Application 63109770 · Nov 4, 2020
Related Publication 20240183636A1 · Jun 6, 2024
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