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  2. Ruger AR-556 - Wikipedia

    en.wikipedia.org/wiki/Ruger_AR-556

    Fixed front iron sight, flip-up rear. The Ruger AR-556 is a semiautomatic AR-15 style rifle manufactured by U.S. firearms company Sturm, Ruger & Co. Introduced in 2014 as an entry-level AR-15 using a direct impingement action, with variants since being released such as the upgraded AR-556 MPR (multi-purpose rifle) in 2017 [1] and the AR-556 ...

  3. Ruger SR-556 - Wikipedia

    en.wikipedia.org/wiki/Ruger_SR-556

    Ruger SR-556. The SR-556 is a semi-automatic AR-15 style rifle manufactured by Sturm, Ruger & Co. The rifle was introduced in 2009 in .223 Remington / 5.56×45mm NATO and as a .308 Winchester AR-10 variant in 2013, the SR-762. [4] It is one of several AR-15 rifles to use a gas piston operation.

  4. AR-15–style rifle - Wikipedia

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

    The lower receiver, without the receiver extension, rear takedown pin, and buttstock, is shown at bottom. An AR-15–style rifle is a lightweight semi-automatic rifle based on or similar to the Colt AR-15 design. The Colt model removed the selective fire feature of its predecessor, the original ArmaLite AR-15, which is a scaled-down derivative ...

  5. STANAG magazine - Wikipedia

    en.wikipedia.org/wiki/STANAG_magazine

    A STANAG magazine[1][2] or NATO magazine is a type of detachable firearm magazine proposed by NATO in October 1980. [3] Shortly after NATO's acceptance of the 5.56×45mm NATO rifle cartridge, Draft Standardization Agreement (STANAG) 4179 was proposed in order to allow NATO members to easily share rifle ammunition and magazines down to the ...

  6. Forward assist - Wikipedia

    en.wikipedia.org/wiki/Forward_assist

    Forward assist. Forward assisting is the practice of moving the bolt or bolt carrier of a firearm fully forward in battery when the return spring has not done so (or there is a chance that it will not have done so) to prevent out-of-battery firing. It is only used on closed bolt only firearms. Some firearms have a dedicated device to allow ...

  7. Ruger Security-Six - Wikipedia

    en.wikipedia.org/wiki/Ruger_Security-Six

    Ruger's new double action revolvers were unlike other guns on the market in that they used a one-piece frame, rather than a removable sideplate, which lent them superior strength. The Ruger Redhawk, introduced in 1980 and also designed by Sefried, was a scaled-up and improved version of the Security-Six.

  8. List of semi-automatic rifles - Wikipedia

    en.wikipedia.org/wiki/List_of_semi-automatic_rifles

    Ruger Deerfield carbine: Sturm, Ruger & Co..44 Magnum United States 2000 Ruger Mini-14: Sturm, Ruger & Co..223 Remington 5.56×45mm NATO.300 AAC Blackout United States 1967 Ruger Mini-30: Sturm, Ruger & Co. 7.62×39mm United States 1987 Ruger Model 44: Sturm, Ruger & Co..44 Remington Magnum United States 1960 Ruger police carbine: Sturm, Ruger ...

  9. 5.56×45mm NATO - Wikipedia

    en.wikipedia.org/wiki/5.56×45mm_NATO

    [69] [70] Some commercial rifles marked as ".223 Remington" are in fact suited for 5.56×45mm NATO, such as many commercial AR-15 variants and the Ruger Mini-14 (marked ".223 cal", except the Mini-14 "Target" model, which only fires .223), but the manufacturer should always be consulted to verify that this is acceptable before attempting it ...