Mar 3, 2026

US12566036 - Firearm receiver

Apparatuses, systems, and methods are disclosed for use in or with firearms. A firearm receiver includes an elongated channel machined or 3D printed from a metallic material, and has a front end and a rear end. The firearm also includes a front trunnion having a rear portion coupled to the front end of the elongated channel and having a front portion configured to couple to a handguard. Also includes is a rear trunnion coupled to the rear end and configured to receive an accessory adapter.

Assignee: Polaris Capital Corporation
Inventors: Ernest R. Bray
Filing date: 2024-09-30

firearmreceivermetallictrunnion

The patent describes a firearm receiver featuring an elongated channel that can be machined or 3D printed from metallic material, equipped with ambidextrous bolt catch slots and trunnions for accessory attachment. This design enhances functionality and adaptability for various firearm configurations.

Claim 1

1 . A receiver comprising: an elongated channel machined or 3 D printed from a metallic material, where the elongated channel has a front end and a rear end and a pair of sides that extend from the front end to the rear end; a first vertically oriented slot formed in a first side of the pair of sides and a second vertically oriented slot formed in a second side of the pair of sides, where the first vertically oriented slot is disposed opposite the second vertically oriented slot; an ambidextrous bolt catch that spans a distance between the pair of sides and passes through the first vertically oriented slot and the second vertically oriented slot are configured to receive an ambidextrous bolt catch; a front trunnion having a rear portion coupled to the front end of the elongated channel and having a front portion configured to couple to a handguard; and a rear trunnion coupled to the rear end and configured to receive an accessory adapter. an elongated channel machined or 3 D printed from a metallic material, where the elongated channel has a front end and a rear end and a pair of sides that extend from the front end to the rear end; a first vertically oriented slot formed in a first side of the pair of sides and a second vertically oriented slot formed in a second side of the pair of sides, where the first vertically oriented slot is disposed opposite the second vertically oriented slot; an ambidextrous bolt catch that spans a distance between the pair of sides and passes through the first vertically oriented slot and the second vertically oriented slot are configured to receive an ambidextrous bolt catch; a front trunnion having a rear portion coupled to the front end of the elongated channel and having a front portion configured to couple to a handguard; and a rear trunnion coupled to the rear end and configured to receive an accessory adapter.

Google Patents

https://patents.google.com/patent/US12566036

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12566036