Nov 3, 2026

US12782076 - Muzzle attachment with locking mechanism

A muzzle attachment for a firearm includes an attachment body defining a projectile passage therethrough along a longitudinal axis, the projectile passage having a proximal end portion sized to receive a distal end portion of a barrel of the firearm or an adapter attached to the barrel. A locking assembly is provided in the attachment body and is operable to tighten the body to the barrel or muzzle adapter by engaging the barrel or muzzle adapter. In one example, the locking assembly includes a fastener that when advanced moves a yoke into engagement with a circumferential groove on the barrel or muzzle adapter. The attachment can be, for example, a compensator, flash hider, or muzzle brake.

Assignee: Sig Sauer, Inc.
Inventors: Jesse D. Cole
Filing date: 2024-05-15

muzzlefirearmattachmentlockingmechanism

The patent describes a muzzle attachment for firearms that features a locking assembly designed to securely tighten the attachment to the barrel or muzzle adapter. This assembly includes a threaded fastener and a yoke that engages with a circumferential groove on the barrel, allowing for various attachment types such as compensators or muzzle brakes.

Claim 1

1 . A muzzle attachment for a firearm, comprising: an attachment body defining a projectile passage therethrough along a longitudinal axis, the projectile passage having a proximal end portion sized to receive a distal end portion of a barrel of the firearm, and further defining a fastener opening extending to the proximal end portion of the projectile passage; and a locking assembly operable to tighten the attachment body to the barrel when the barrel is received in the proximal end portion of the projectile passage, the locking assembly comprising: a threaded fastener in the fastener opening; and a yoke having a curved portion in the proximal end portion of the projectile passage; wherein the yoke includes a base extending from the curved portion into the fastener opening towards an end of the fastener; and wherein, when the distal end portion of the barrel is received in the proximal end portion of the projectile passage, advancing the fastener moves the yoke into contact with the barrel to tighten the attachment to a muzzle adapter. an attachment body defining a projectile passage therethrough along a longitudinal axis, the projectile passage having a proximal end portion sized to receive a distal end portion of a barrel of the firearm, and further defining a fastener opening extending to the proximal end portion of the projectile passage; and a locking assembly operable to tighten the attachment body to the barrel when the barrel is received in the proximal end portion of the projectile passage, the locking assembly comprising: a threaded fastener in the fastener opening; and a yoke having a curved portion in the proximal end portion of the projectile passage; wherein the yoke includes a base extending from the curved portion into the fastener opening towards an end of the fastener; and wherein, when the distal end portion of the barrel is received in the proximal end portion of the projectile passage, advancing the fastener moves the yoke into contact with the barrel to tighten the attachment to a muzzle adapter. a threaded fastener in the fastener opening; and a yoke having a curved portion in the proximal end portion of the projectile passage; wherein the yoke includes a base extending from the curved portion into the fastener opening towards an end of the fastener; and wherein, when the distal end portion of the barrel is received in the proximal end portion of the projectile passage, advancing the fastener moves the yoke into contact with the barrel to tighten the attachment to a muzzle adapter.

Google Patents

https://patents.google.com/patent/US12782076

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12782076