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  2. Parts kit - Wikipedia

    en.wikipedia.org/wiki/Parts_kit

    In addition, under US gun law, a receiver that is legally a machine gun cannot legally become semi-automatic. [4] There is no federal restriction on the purchase and import of machine gun parts kits (minus the barrel), however. [3] Parts kits are available for many firearms including the AR-15 and AKM variants. [5] [6] [7]

  3. Sight (device) - Wikipedia

    en.wikipedia.org/wiki/Sight_(device)

    Mark III free gun reflector sight mk 9 variant. Another type of optical sight is the reflector (or "reflex") sight, a generally non-magnifying optical device that allows the user to look through a glass element and see a reflection of an illuminated aiming point or some other image superimposed on the field of view. [7]

  4. Low Level Bombsight, Mark III - Wikipedia

    en.wikipedia.org/wiki/Low_Level_Bombsight,_Mark_III

    The Low Level Bombsight, Mark III, sometimes known as the Angular Velocity Sight, was a Royal Air Force (RAF) bombsight designed for attacks by aircraft flying below 1,000 feet (300 m) altitude. It combined components of the Mark XIV bomb sight with a new mechanical computer .

  5. Martini–Enfield - Wikipedia

    en.wikipedia.org/wiki/Martini–Enfield

    Originally (from 1889) Martini–Henry conversions used Metford rifled barrels (and were known as Martini–Metford rifles), which were more than suitable for the first .303 cartridges, which used black powder as a propellant but wore out very quickly when fired with cordite/nitrocellulose cartridges (introduced in 1895). In 1895, the Enfield ...

  6. Reflector sight - Wikipedia

    en.wikipedia.org/wiki/Reflector_sight

    A view through the Mark III Free Gun Reflector Sight, first produced in 1943, used on British army guns, naval guns, and as a pilot sight and a defensive gun sight on aircraft. The reticle image in this sight is produced by an optical collimator bounced off a beam splitter.

  7. Snider–Enfield - Wikipedia

    en.wikipedia.org/wiki/Snider–Enfield

    The Mark III rifles were newly made. They featured steel barrels which were so marked, flat nosed hammers, and a latch-locking breech block instead of the simple integral block lifting tang. The Snider–Enfield used a new type of metal-cased cartridge called a Boxer cartridge after its designer.

  8. The Amazon Prime symbol probably doesn't mean what you think ...

    www.aol.com/news/2016-11-17-the-amazon-prime...

    In actuality, any of Amazon's 3 million marketplace sellers can use the Amazon warehouse to house and ship their items and get the so-called "coveted" mark on its products.

  9. Mark III - Wikipedia

    en.wikipedia.org/wiki/Mark_III

    Mk III: The Final Concerts, a 1975 concert album by Deep Purple; Emergency Medical Hologram Mark III, a character on the television series Star Trek: Voyager; Mark III, a fictional cybernetic tank in the game Ogre; Mark III Flying Car, a fictional vehicle driven by Danger Mouse; Cobra Mk III, a spaceship in the computer game Elite