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  2. Picatinny rail - Wikipedia

    en.wikipedia.org/wiki/Picatinny_rail

    The MIL-STD-1913 rail is commonly called the "Picatinny Rail", in reference to the Picatinny Arsenal in New Jersey. Picatinny Arsenal works as a contracting office for small arms design (they contracted engineers to work on the M4 [ 4 ] ).

  3. 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.

  4. 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 ...

  5. M-LOK - Wikipedia

    en.wikipedia.org/wiki/M-LOK

    The slot dimensions (used on handguards, etc.) are available on the web. [10] The slots provide metric 20 mm (0.79 in) length intervals, and accessories can be mounted either within a slot or bridging between slots, making it possible to adjust the position of accessories in smaller intervals than the length of the slot. The slots on an M-Lok ...

  6. Weaver rail mount - Wikipedia

    en.wikipedia.org/wiki/Weaver_rail_mount

    The military standard, MIL-STD-1913 "Picatinny rails" date from the mid-1990s and have very strict military standard dimensions and tolerances. The Picatinny rail has a similar profile to the Weaver, but the recoil groove width of the Picatinny rail is 0.206 in (5.23 mm) versus 0.180 in (4.57 mm) of the Weaver rail/mount, and by contrast with ...

  7. Dovetail rail - Wikipedia

    en.wikipedia.org/wiki/Dovetail_rail

    Right: Acro rail on a Picatinny riser. Approximate dimensions of an Aimpoint Acro rail. Some dovetail rails have integrated recoil lugs. One example is the Aimpoint Acro rail which is a 45 degree rail with a width of approximately 16.5 mm.

  8. Heckler & Koch G3 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_G3

    Width: 45 mm (1.8 in) Height: 220 mm (8.7 in) with inserted magazine ... with 20mm ammunition. ... featuring B&T Picatinny rails on the receiver, as well as a RIS ...

  9. Heckler & Koch XM8 - Wikipedia

    en.wikipedia.org/wiki/Heckler_&_Koch_XM8

    The XM8 abandoned the standard Picatinny rail for attachment of weapon accessories, in favor of a new standard referred to as PCAP (Picatinny Combat Attachment Points), small oval holes on the forward grip. (A variant was designed with MIL-STD-1913 rails — XM8 R; and some early XM8 prototypes had rails.)