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  2. Colt AR-15 - Wikipedia

    en.wikipedia.org/wiki/Colt_AR-15

    The standard AR-15 rifle has a 500 mm (19.69-inch) sight radius. [15] The AR-15 uses an L-type flip, aperture rear sight and it is adjustable with two settings, 0 to 300 meters and 300 to 400 meters. [16] The front sight is a post adjustable for elevation. The rear sight can be adjusted for windage. The sights can be adjusted with a bullet tip ...

  3. List of Colt AR-15 and M16 rifle variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Colt_AR-15_and_M16...

    ArmaLite AR-15 with the charging handle located on top of the upper receiver, protected within the carrying handle and a 25-round magazine. 1973 Colt AR-15 SP1 rifle with "slab side" lower receiver (lacking raised boss around magazine release button) and original Colt 20-round magazine.

  4. Receiver (firearms) - Wikipedia

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

    Thus, in the case of a firearm that has multiple receiver parts, such as the AR-15, which has an upper and a lower receiver, the legally controlled part is the one that is serialized. [ 5 ] For the AR-15 rifle, the lower receiver assembly is legally considered the actual receiver, [ 5 ] although it is functionally a chassis that also houses the ...

  5. Helldivers 2 - Wikipedia

    en.wikipedia.org/wiki/Helldivers_2

    Helldivers 2 is a 2024 cooperative third-person shooter game developed by Arrowhead Game Studios and published by Sony Interactive Entertainment for the PlayStation 5 and Windows. The game is the direct sequel to Helldivers (2015).

  6. AR-15–style rifle - Wikipedia

    en.wikipedia.org/wiki/AR-15–style_rifle

    The upper receiver contains the bolt carrier assembly and is attached to the barrel assembly. Sights may be attached to the upper receiver or the barrel assembly. A handguard usually encloses the barrel and is attached to the upper receiver, and depending on the handguard, also attached to the barrel's gas block. [34]

  7. Helldivers - Wikipedia

    en.wikipedia.org/wiki/Helldivers

    Helldivers is a 2015 Swedish top-down shooter video game developed by Arrowhead Game Studios and published by Sony Computer Entertainment. The game was released for PlayStation 3 , PlayStation 4 , and PlayStation Vita (with cross-play) in March 2015. [ 4 ]

  8. List of AR platform cartridges - Wikipedia

    en.wikipedia.org/wiki/List_of_AR_platform_cartridges

    The resulting COAL of 2.300" is only 1.02 mm longer than the maximum COAL for chambering a cartridge in the smaller AR-15; however, the 45 Raptor chamber pressure is allowed to be as high as 62,000 PSI. This means that the stronger AR-10 receiver and bolt carrier group is needed for shooting this cartridge.

  9. Bore axis - Wikipedia

    en.wikipedia.org/wiki/Bore_axis

    For example on an AR-type rifle, the mil-spec distance from center of bore to top of rail is 1.211 inches, or approximately 31 mm (1.2 in). The mount height itself, that is the distance from the top of rail to center of scope, varies, but typically lies around 36–38 mm (1.41.5 in) (higher and lower mounts are also readily available).