Oct 6, 2026

US12753994 - Locating fastener for firearm optic

In various embodiments, an apparatus comprises a locating optic assembly mount arranged to receive an optic sight or an adapter on which the optic sight is installable, wherein the locating optic assembly mount includes: one or more locating fastener openings to receive one or more locating fasteners with threaded sections and non-threaded shoulders, wherein the non-threaded shoulders extend through the optic sight or the adapter and below a surface located below the optic sight or the adapter, each locating fastener opening including: a threaded hole to mate with the threaded section of the corresponding locating fastener; and a counter opening located above the threaded hole, wherein the counter opening is arranged to slip fit with the non-threaded shoulder of the corresponding locating fastener to align a center axis of the locating fastener with a center axis of the locating fastener openings. Other embodiments may be disclosed and/or claimed.

Assignee: AXTS INC
Inventors: Joshua A. Underwood
Filing date: 2025-08-25

firearmopticmountfastener

The patent describes a locating optic assembly mount designed to securely attach an optic sight or adapter using a locating fastener with both threaded and non-threaded sections. This innovative design ensures proper alignment of the fastener’s center axis with the mount’s openings, enhancing stability and accuracy for firearm optics.

Claim 1

1 . An apparatus, comprising: a locating optic assembly mount arranged to receive a direct-mount optic sight or an adapter on which another optic sight is installable, wherein the locating optic assembly mount includes: a locating fastener opening to receive a locating fastener with a threaded section and a non-threaded shoulder, the locating fastener including a portion extending into the direct-mount optic sight or the adapter and another portion below a surface located below the direct-mount optic sight or the adapter, wherein the other portion of the locating fastener includes at least a portion of the non-threaded shoulder; the locating fastener opening including: a threaded hole to mate with the threaded section of the locating fastener; and a counter opening located above the threaded hole, wherein the counter opening is arranged to slip fit with the non-threaded shoulder to align a center axis of the locating fastener with a center axis of the locating fastener opening. a locating optic assembly mount arranged to receive a direct-mount optic sight or an adapter on which another optic sight is installable, wherein the locating optic assembly mount includes: a locating fastener opening to receive a locating fastener with a threaded section and a non-threaded shoulder, the locating fastener including a portion extending into the direct-mount optic sight or the adapter and another portion below a surface located below the direct-mount optic sight or the adapter, wherein the other portion of the locating fastener includes at least a portion of the non-threaded shoulder; the locating fastener opening including: a threaded hole to mate with the threaded section of the locating fastener; and a counter opening located above the threaded hole, wherein the counter opening is arranged to slip fit with the non-threaded shoulder to align a center axis of the locating fastener with a center axis of the locating fastener opening. a locating fastener opening to receive a locating fastener with a threaded section and a non-threaded shoulder, the locating fastener including a portion extending into the direct-mount optic sight or the adapter and another portion below a surface located below the direct-mount optic sight or the adapter, wherein the other portion of the locating fastener includes at least a portion of the non-threaded shoulder; the locating fastener opening including: a threaded hole to mate with the threaded section of the locating fastener; and a counter opening located above the threaded hole, wherein the counter opening is arranged to slip fit with the non-threaded shoulder to align a center axis of the locating fastener with a center axis of the locating fastener opening. a threaded hole to mate with the threaded section of the locating fastener; and a counter opening located above the threaded hole, wherein the counter opening is arranged to slip fit with the non-threaded shoulder to align a center axis of the locating fastener with a center axis of the locating fastener opening.

Google Patents

https://patents.google.com/patent/US12753994

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12753994