Firearm sight system

Abstract

Firearm sight systems have an elongated mounting rail including a plurality of transverse bars separated by intervening transverse mounting location channels extending from a rearmost channel to a forwardmost channel, the rail having an elongated upper surface, the rail defining a pocket below the upper surface and at least in part forward of the rearmost channel, and a sight arm pivotally connected to the rail and movable between an elevated position angularly offset from the upper surface of the rail and a stowed position in which the sight arm occupies the pocket. At least a forward portion of the sight arm may be entirely below the upper surface of the rail when in the stowed position. The entire sight arm may be entirely below the upper surface of the rail when in the stowed position. The sight arm may pivot on a pivot axis below the upper surface of the rail.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is a Continuation-in-Part of U.S. patent application Ser. No. 16 / 247,738 filed on Jan. 15, 2019, entitled “IFS-R (INTEGRATED FLIP-UP SIGHT-REAR) SYSTEM, AR-15 / 10 AND M16 / M4 VARIANTS AND OTHERS,” which claims the benefit of U.S. Provisional Patent Application No. 62 / 619,855 filed on Jan. 21, 2018, entitled “IFS-R (Integrated Flip-Up Sight-Rear) System, AR-15 / 10 and M16 / M4 Variant and Others,” which are hereby incorporated by reference in their entirety for all that is taught and disclosed therein.FIELD OF THE INVENTION[0002]The present invention relates to firearms, and more particularly to a firearm sight system that provides an integrated flip-up rear sight for AR-15 / 10 and M16 / M4 rifle variants.BACKGROUND OF THE INVENTION[0003]The modern AR-15 style rifle platform is primarily comprised of MIL-SPEC (Military Specification) components originally derived from the M16A1 / A2, M4A1 and M16A4 variants. Platforms include semi-au...

AI Technical Summary

Benefits of technology

The system provides a practical, tool-free, and impact-resistant sighting solution that maintains MIL-SPEC centerlines, ensuring accurate calibration and operation without power dependence, enhancing tactical effectiveness.

Problems solved by technology

However, this design is rather impractical, as it often requires the use of a special tool, such as a hex driver, screwdriver, Torx® driver, etc. to mount, adjust or uninstall on the Picatinny rail.

Furthermore, many of these devices are attached to the Picatinny rail by a single fastener, screw or bolt, and are consequently susceptible to loosening during use and the subsequent loss of sight calibration or zero; thus, creating the added burden of always having to carry a special tool for this purpose, which could prove to be especially burdensome in a tactical environment.

Moreover, the deviation of reliance upon Iron Sights to an electronic optical device, which can illuminate reticles, provide electronic magnification and / or thermal imaging, tends to produce an undesired dependence, thus effecting a considerable tactical disadvantage as these optics require a constant, replenishing source of power (i.e. batteries, power cells, etc.).

However, once a source of power is no longer readily available, the device would be rendered inoperable, causing conditions to rapidly deteriorate.

Additionally, while many configurations of the flip-up type sight utilize a locking mechanism, which must be pressed or released to permit folding, they are typically not impact resistant once positioned into the flip-up orientation, making them susceptible to strike or impact damage.

Another problematic condition of prior art flip-up style sights is a deviation from the original MIL-SPEC sight centerline to the bore centerline.

Because most rear flip-up style sights do not provide elevation adjustment or compensation, this condition can exceed the vertical adjustment travel (+ / −) of the front sight post.

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