The NATO Accessory Rail (NAR), defined by

NATO The North Atlantic Treaty Organization (NATO, ; french: Organisation du traité de l'Atlantique nord, ), also called the North Atlantic Alliance, is an intergovernmental military alliance between 30 member states – 28 European and two No ...

Standardization Agreement In NATO, a standardization agreement (STANAG, redundantly: STANAG agreement) defines processes, procedures, terms, and conditions for common military or technical procedures or equipment between the member countries of the alliance. Each NATO st ...

(STANAG) 4694, is a rail interface system standard for mounting accessory equipments such as

telescopic sights A telescopic sight, commonly called a scope informally, is an optical sighting device based on a refracting telescope. It is equipped with some form of a referencing pattern – known as a ''reticle'' – mounted in a focally appropriate po ...

tactical light A tactical light is a flashlight used in conjunction with a firearm to aid low-light target identification, allowing the marksman, law enforcement officer or soldier to simultaneously aim a weapon and illuminate the target. Tactical lights can ...

laser aiming module A laser sight is a device attached or integral to a firearm to aid target acquisition. Unlike optical and iron sights where the user looks through the device to aim at the target, laser sights project a beam onto the target, providing a visual r ...

night vision device A night-vision device (NVD), also known as a night optical/observation device (NOD), night-vision goggle (NVG), is an optoelectronic device that allows visualization of images in low levels of light, improving the user's night vision. The dev ...

reflex sight A reflector sight or reflex sight is an optical sight that allows the user to look through a partially reflecting glass element and see an illuminated projection of an aiming point or some other image superimposed on the field of view. These sigh ...

foregrip A vertical forward grip or foregrip is a vertical pistol grip mounted on the fore-end of a long-barrel firearm, designed for grasping by the frontal support hand (or "off hand"). Use Forward grips aid in the maneuverability of the firearm, ...

bipod A bipod is a V-shaped portable attachment that helps support and steady a device, usually a weapon such as a long gun or a mortar. The term comes from the Latin prefix ''bi-'' and Greek root ''pod'', meaning "two" and "foot" respectively. Bipod ...

s and

bayonet A bayonet (from French ) is a knife, dagger, sword, or spike-shaped weapon designed to fit on the end of the muzzle of a rifle, musket or similar firearm, allowing it to be used as a spear-like weapon.Brayley, Martin, ''Bayonets: An Illustr ...

s to

small arms A firearm is any type of gun designed to be readily carried and used by an individual. The term is legally defined further in different countries (see Legal definitions). The first firearms originated in 10th-century China, when bamboo tubes c ...

such as rifles and pistols. STANAG 4694 was approved by the NATO Army Armaments Group (NAAG), Land Capability Group 1 Dismounted Soldier (LCG1-DS) in 2009. It was published in March 2011. The NATO Accessory Rail is backwards-compatible with the STANAG 2324/MIL-STD 1913

Picatinny rail The Picatinny rail ( or ), or Pic rail for short, also known as a MIL-STD-1913 rail, 1913 rail or STANAG 2324 rail (cancelled), is a military standard rail interface system that provides a mounting platform for firearm accessories. It was o ...

, which dates back to 3 February 1995, and was designed in conjunction with weapon specialists like

Aimpoint Aimpoint AB is a Swedish optics company based in Malmö, Sweden that manufactures red dot sights. Aimpoint is a contractor for the United States military and supplies the Aimpoint CompM2. Aimpoint products are used by various armed forces ...

Beretta Fabbrica d'Armi Pietro Beretta (; "Pietro Beretta Weapon Factory") is a privately held Italian firearms manufacturing company operating in several countries. Its firearms are used worldwide for a variety of civilian, law enforcement, and militar ...

Colt Firearms Colt's Manufacturing Company, LLC (CMC, formerly Colt's Patent Firearms Manufacturing Company) is an American firearms manufacturer, founded in 1855 by Samuel Colt and is now a subsidiary of Czech holding company Colt CZ Group. It is the succ ...

FN Herstal Fabrique Nationale Herstal (), trading as FN Herstal and often referred to as Fabrique Nationale or simply FN, is a leading firearms manufacturer based in Herstal, Belgium. It is currently the largest exporter of military small arms in Europe. F ...

and

Heckler & Koch Heckler & Koch GmbH (HK; ) is a German defense manufacturing company that manufactures handguns, rifles, submachine guns, and grenade launchers. The company is located in Oberndorf am Neckar in the German state of Baden-Württemberg, and also ...

. The

Heckler & Koch G28 A heckler is a person who harasses and tries to disconcert others with questions, challenges, or gibes. Hecklers are often known to shout encouraging comments at a performance or event, or to interrupt set-piece speeches, with the intent of di ...

designated marksman rifle A designated marksman rifle (DMR) is a modern telescopic sight, scoped high-Accuracy and precision, precision rifle used by infantrymen in the designated marksman (DM) role. It generally fills the engagement effective range, range gap between ...

features NATO Accessory Rails.

Technical specifications

According to the NATO Army Armaments Group the differences between the MIL-STD 1913 Picatinny rail and the STANAG 4694 are: * A

metric Metric or metrical may refer to: * Metric system, an internationally adopted decimal system of measurement * An adjective indicating relation to measurement in general, or a noun describing a specific type of measurement Mathematics In mathem ...

reference drawing. * Additional new measurements and tolerances. * Adjustments of some measurements. * Tighter straightness tolerances (approximately 50%). Another notable change is the recommendation that while in the Picatinny rail system the V-angles are used for the alignment and reference of the accessory, NATO recommends using the top surface instead. Initial NATO tests had shown that the Picatinny rail system did not provide good

repeatability Repeatability or test–retest reliability is the closeness of the agreement between the results of successive measurements of the same measure, when carried out under the same conditions of measurement. In other words, the measurements are taken ...

. Using the top surface as a reference and alignment of the grabbers provided excellent repeatability. File:STANAG 4694 “NATO Accessory Rail” 1.jpg, STANAG 4694 "NATO Accessory Rail" metric reference drawing (dimensions in millimetres). File:STANAG 4694 “NATO Accessory Rail” 2.jpg, STANAG 4694 "NATO Accessory Rail" Rail - Grabber interfaces.

Video cameras

NATO rail design is also used for small video camera setups. Videos shot with DSLR or Mirrorless cameras use a variety of mounting systems for attaching microphones, monitors, lighting, and other accessories. A NATO-compatible rail is one of these systems. Although it is advertised to meet the same specifications, there is some discussion that some of the rails and accessories are not compatible with one another.

Further plans

Further plans are underway to develop a NATO standard to provide electrical power to rail mounted accessories in the future. Currently, Wilcox Industries, in cooperation with Surefire, is working on the creation of a railed forend for an AR-15 that will power battery-reliant accessories such as tactical lights and laser sights. Accessories are intended to be powered by one central battery pack or via their proprietary vertical grip, the Universal Control Grip.Wilcox Industries Develops a "Power Rail" For ARs
/ref>

References

External links

NATO countries finalise plans for a standard rail adaptor system
{{Firearm accessories mounting standards Firearm components Mechanical standards

Technical specifications

Video cameras

Further plans

See also

References

External links