May 26, 2026

US12638270 - Adjustable sight assembly

In one example, the disclosure relates to adjustable flip up sight assembly that can be adjusted vertically and laterally in particular, for an automatic firearm, comprising a front sight support element that is supported by an axle on a mount, in particular such that they can pivot thereon, wherein the front sight support element has an adjustment element supported on a spring element and releasably connected to a front sight, which contains a keyhole type opening through which the axle is inserted, wherein the adjustment element can be moved in relation to the axle against the spring force between two positions inside the front sight support element such that the keyhole opening prevents a lateral movement of the front sight support element along the axle when engaged with the axle, and allows the lateral adjustment of the front sight support element in a released position.

Assignee: Heckler & Koch GmbH
Inventors: Markus Hetzel, Stefan Thimm
Filing date: 2025-01-17

firearmsightadjustableautomatic

The patent describes an adjustable flip-up sight assembly for automatic firearms, featuring a front sight support element that pivots on an axle and can be adjusted vertically and laterally. The adjustment element includes a unique opening design that allows for torque transfer in one position while preventing it in another, facilitating precise sight adjustments.

Claim 1

1 . An adjustment element for an adjustable flip up sight assembly, the adjustment element comprising: a first section extending longitudinally, wherein the first section releasably connects with a front sight; and a second section connected to the first section, wherein the second section includes an opening to insert an axle, and wherein the opening includes a first geometry and a second geometry different from the first geometry, and wherein the opening produces a torque-transferring connection with the axle via the first geometry and prevents the torque-transferring connection with the axle via the second geometry. a first section extending longitudinally, wherein the first section releasably connects with a front sight; and a second section connected to the first section, wherein the second section includes an opening to insert an axle, and wherein the opening includes a first geometry and a second geometry different from the first geometry, and wherein the opening produces a torque-transferring connection with the axle via the first geometry and prevents the torque-transferring connection with the axle via the second geometry.

Google Patents

https://patents.google.com/patent/US12638270

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12638270