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[citation needed] These were the M16A2 [2] and the M4 [3] modified with new upper receivers where rails replaced hand guards. [verification needed] The MIL-STD-1913 rail is commonly called the "Picatinny Rail", in reference to the Picatinny Arsenal in New Jersey.
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 ...
The specifications for the KeyMod system were first published in July 2012. The current revision was released in October 2012. In 2017, a summary report of testing conducted by NSWC-Crane for USSOCOM indicated that, while comparable in endurance and rough handling testing, M-LOK greatly outperformed KeyMod in repeatability, drop testing and ...
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 the Weaver, the spacing of the Picatinny recoil groove centers is consistent, at 0.394 in (10.01 mm). [5]
The Picatinny Arsenal (/ ˈ p ɪ k ə t ɪ n i / or / ˌ p ɪ k ə ˈ t ɪ n i /) is an American military research and manufacturing facility located on 6,400 acres (2,590 ha) of land in Jefferson and Rockaway Townships in Morris County, New Jersey, United States, encompassing Picatinny Lake and Lake Denmark.
The best known rail interface system is the standardized MIL-STD-1913 Picatinny rail or "Pic rail", also known as the STANAG 2324 rail after its adoption by NATO forces on 3 February 1995. It is named after the Picatinny Arsenal in New Jersey , where it was originally designed, tested and proposed for military adoption over other rail standards ...
Among scopes for rail mounts, the 22.5-degree V-shaped Zeiss rail is the most prevalent standard. It was introduced in 1990. After the patent expired in 2008, compatible scopes have been offered from manufacturers such as Blaser, [1] Leica, Minox, Meopta, Nikon, [2] Noblex (formerly Docter [3]), Schmidt & Bender [4] and Steiner. [5]
The height of the rail is also higher, allowing the use of a normal-height front sight base whereas a Picatinny rail requires the use of a higher F-marked front sight base to raise the post. During development, the original rails were vacuum-bonded to the top of a bare receiver. For production, the rail and receiver were made out of a single ...