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  2. Vortex Optics - Wikipedia

    en.wikipedia.org/wiki/Vortex_Optics

    Vortex Optics is a DBA of Sheltered Wings, Inc., which was incorporated in Wisconsin in 1989. Sheltered Wings, Inc. DBA Vortex Optics began in 2002. In 2022 after extensive research, testing and reviews Vortex became an official supplier and contractor to the American Military as the U.S. Army selected Vortex‘s XM-157 fire control system for its Next Generation Squad Weapon program.

  3. Optical vortex - Wikipedia

    en.wikipedia.org/wiki/Optical_vortex

    An optical singularity is a zero of an optical field. The phase in the field circulates around these points of zero intensity (giving rise to the name vortex). Vortices are points in 2D fields and lines in 3D fields (as they have codimension two). Integrating the phase of the field around a path enclosing a vortex yields an integer multiple of ...

  4. ZF41 - Wikipedia

    en.wikipedia.org/wiki/ZF41

    Starting from 1941, the short 1.5× Zielfernrohr 41 (ZF41) telescopic sight was fitted to some Karabiner 98k rifles for designated marksman use. The ZF41 was the first attempt to provide the ordinary infantryman with a rifle capable of being used, if not for pure sniping, then at least for sharpshooting. It was initially planned to equip most ...

  5. C79 optical sight - Wikipedia

    en.wikipedia.org/wiki/C79_optical_sight

    It is 3.4×28, meaning 3.4x magnification, and a 28mm diameter objective lens. A tritium illuminated reticle provides for normal and low-light conditions sighting. [ 1 ] It can be mounted to a variety of rifles and light machine guns using the Picatinny rail mounting system or the similar Diemaco rail system found on small arms produced by ...

  6. Telescopic sight - Wikipedia

    en.wikipedia.org/wiki/Telescopic_sight

    The most commonly seen click values are 1 ⁄ 4 MOA (often expressed in approximations as "1 ⁄ 4 inch at 100 yards") and 0.1 mil (often expressed as "10 mm at 100 meters"), although other click values such as 12 MOA, 13 MOA or 18 MOA and other mil increments are also present on the commercial and military and law enforcement ...

  7. Rim (firearms) - Wikipedia

    en.wikipedia.org/wiki/Rim_(firearms)

    Rimfire cartridges also use the rim to contain the priming compound to ignite the cartridge instead of a centrally-mounted primer, as is commonly used in centerfire cartridges. [1] Under the metric cartridge designation system, a capitalized "R" added at the end of the designation denotes a rimmed cartridge.

  8. PSO-1 - Wikipedia

    en.wikipedia.org/wiki/PSO-1

    For zeroing the telescopic sight the reticle can be adjusted by manipulating the elevation and windage turrets in 5 centimetres (2.0 in) at 100 metres (109 yd) (0.5 mil or 1.72 MOA) increments. [2] Considered the higher end of Soviet military side-mount telescopic sights, the quality of the PSO-1 is higher than most other PSO-style telescopic ...

  9. 5.45×39mm - Wikipedia

    en.wikipedia.org/wiki/5.45×39mm

    The 5.45×39mm cartridge is a rimless bottlenecked intermediate cartridge.It was introduced into service in 1974 by the Soviet Union for use with the new AK-74.The 5.45×39mm gradually supplemented and then largely replaced the 7.62×39mm cartridge in Soviet and Warsaw Pact service as the primary military service rifle cartridge.

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