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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.
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 ...
It is similar in concept to the earlier commercial Weaver rail mount used to mount telescopic sights, but is taller and has wider slots at regular intervals along the entire length. The MIL-STD-1913 locking slot width is 0.206 in (5.23 mm). The spacing of slot centres is 0.394 in (10.01 mm) and the slot depth is 0.118 in (3.00 mm). [8]
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.
IWC International Watch Co. AG, founded International Watch Company, better known as IWC Schaffhausen, is a Swiss luxury watch manufacturer located in Schaffhausen, Switzerland. [1] Originally founded in Switzerland by American watchmaker Florentine Ariosto Jones in 1868, the company was transferred to the Rauschenbach family in 1880 after ...
The Weaver mount was developed by William Ralph Weaver (1905 – 8 November 1975) at his telescopic sight company W.R. Weaver Co., which he founded in 1930. [3] Previous systems included the Leupold/Redfield mounts. [4] Compared to the Leupold mount, the Weaver rail is not as strong and cannot be adjusted for windage. [4]
"Construction height" typically refers to only the height contribution from the mount itself, and is typically provided by the mount manufacturer. Low Zeiss rail mounts typically have a construction height between 7–9 mm (0.28–0.35 in) for traditional bolt action hunting rifles, but can be up to 23 mm (0.91 in) for modern bolt and AR-style ...
NOTE: Some published reviews of 4/3 instead cite the (female) "outside diameter" of the lens or mount as ~50mm (and micro-4/3 as ~44mm), [23] and not the appropriate major diameter (D) ~44mm which is the camera body's female mount inside-diameter and the lens's male mount outside-diameter (micro-4/3 ~38mm).