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  2. Picatinny rail - Wikipedia

    en.wikipedia.org/wiki/Picatinny_rail

    The only significant difference between the MIL-STD-1913 rail and the similar Weaver rail mount are the size and shapes of the slots. Whereas the earlier Weaver rail is modified from a low, wide dovetail rail and has rounded slots, the 1913 rail has a more pronounced angular section and square-bottomed slots. This means that an accessory ...

  3. Dovetail rail - Wikipedia

    en.wikipedia.org/wiki/Dovetail_rail

    The mount is found on the left side of the rifle receiver, with machined cutouts for reduced weight and ease of installation; an example is the PSO-1 optical sight. Similar rails can also be found on rifles such as the Dragunov sniper rifle (SVD), the PSL rifle, the PKM as well as some AK series assault rifles from 1954 onwards. Since 1992 the ...

  4. NATO Accessory Rail - Wikipedia

    en.wikipedia.org/wiki/NATO_Accessory_Rail

    NATO Accessory Rail (STANAG 4694) The NATO Accessory Rail (NAR), defined by NATO Standardization Agreement (STANAG) 4694, is a rail interface system standard for mounting accessory equipment such as telescopic sights, tactical lights, laser aiming modules, night vision devices, reflex sights, foregrips, bipods and bayonets to small arms such as rifles and pistols.

  5. M-LOK - Wikipedia

    en.wikipedia.org/wiki/M-LOK

    A prototype of the MOE slot was revealed by Magpul in late 2007 together with their Masada Concept Rifle (which would later be known as the Adaptive Combat Rifle).Magpul released the MOE slot system in 2008 as a feature on their MOE handguards, and at the same time compatible accessories such as Picatinny rail sections, direct MOE mounted light mounts, grips, bipod studs, etc. were released.

  6. Rail integration system - Wikipedia

    en.wikipedia.org/wiki/Rail_integration_system

    A rail system mounted on top of a SIG SG 550 A dovetail rail on a rifle receiver for mounting a sight. A rail integration system (RIS; also called a rail accessory system (RAS), rail interface system, rail system, mount, base, gun rail, or simply a rail [1]) is a generic term for any standardized attachment system for mounting firearm accessories via bar-like straight brackets (i.e. "rails ...

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

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

    A1: Also referred to as the "lightweight" or "pencil" profile. Government-specified barrel profile increased to between 0.675 and 0.575 inches; A2: Also referred to as the "government" or "gov't" profile. Barrel profile for which the portion of the barrel in front of handguards is thickened to 0.715 inches

  8. Heckler & Koch XM8 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_XM8

    For much of its life, four different models were proposed: a compact PDW (personal defense weapon) with a 241 mm (9.5 in) barrel, a carbine with a 317 mm (12.5 in) barrel, a sniper and automatic rifle variant, both with 508 mm (20 in) barrels. In addition a Light machine gun with a 100-round dual drum Beta C-Mag is proposed.

  9. Heckler & Koch G3 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_G3

    G3M-Tactical: A light weight version of G3 rifle with polymer body and shorter barrel. Manufactured in two different versions; automatic or semi automatic. AZB (DMR): A high precision version of G3 rifle with extended barrel length and mill std. picatinny rail as rifle scope mount. Manufactured in two different versions; automatic or semi ...