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SUSAT
The Sight Unit Small Arms, Trilux, or SUSAT, is a 4× telescopic sight, with Tritium illumination , tritium-powered illumination utilised at dusk or dawn. The full name of the current model is the SUSAT L9A1. The sight is not designed as a sniper sight, but is rather intended to be mounted on a variety of rifles and to be used by all infantrymen. Similar devices include the Advanced Combat Optical Gunsight (ACOG), manufactured by Trijicon, and the Specter (sight), Elcan Specter. Use SUSAT was the primary sighting system for the British Army's SA80, SA80 series weapons. It was also used with FN Minimi, L108 and L110 light machine guns, and mounted to FN MAG, L7 and M2 Browning, L111 machine guns. It was phased out and replaced by Advanced Combat Optical Gunsight, ACOG and ELCAN Optical Technologies, ELCAN sight units during mid-life upgrade programmes. As of March 2025 it is still in use with much of the UK armed forces – primarily reserve, rear-echelon and for training use d ...
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SA80
The SA80 (Small Arms for the 1980s) is a British family of 5.56×45mm NATO service weapons used by the British Army. The L85 Rifle variant has been the standard issue service rifle of the British Armed Forces since 1987, replacing the L1A1 Self-Loading Rifle. The prototypes were created in 1976, with production of the A1 variant starting in 1985 and ending in 1994. The A2 variant came to be as the result of a significant upgrade in the early 2000s by Heckler & Koch and remains in service as of 2025. The A3 variant was first issued in 2018 with several new improvements. The remainder of the SA80 family consists of the L86 Light Support Weapon, the short-barrelled L22 Carbine and the L98 Cadet rifle. The SA80 was the last in a long line of British weapons (including the Lee–Enfield family) to come from the Royal Small Arms Factory, the national arms development and production facility at Enfield Lock, before its weapons factory was closed down in 1988. Development Post-war i ...
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Telescopic Sight
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 position in its optical system to provide an accurate point of aim. Telescopic sights are used with all types of systems that require magnification in addition to reliable visual aiming, as opposed to non-magnifying iron sights, reflector (reflex) sights, holographic sights or laser sights, and are most commonly found on long-barrel firearms, particularly rifles, usually via a scope mount. Similar devices are also found on other platforms such as artillery, tanks and even aircraft. The optical components may be combined with optoelectronics to add night vision or smart device features. History The first experiments directed to give shooters optical aiming aids go back to the early 17th century. For centuries, different optical ...
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Ak 5
The Ak 5 (, English: Automatic Carbine 5) is a license-built Swedish version of the Belgian FN FNC assault rifle, with certain modifications, mostly to adapt the weapon to the partially subarctic, subarctic Swedish climate. The Ak 5 is the current service rifle of the Swedish Armed Forces, adopted in 1986, partially replacing the Ak 4, a license-built version of the Heckler & Koch G3. In 2021, Sweden announced that they were looking to develop a new rifle in collaboration with Finland, which would replace the Ak5. In 2023 this rifle took shape as the new Automatkarbin 24. History In the mid-1970s, despite the failure of the NIVA XM1970, ''Nytt infanterivapen'' (New Infantry Weapon) program, the Swedish Armed Forces decided to continue to follow the general transition towards Intermediate cartridge, smaller calibre ammunition and directed the Defence Materiel Administration (Sweden), Försvarets MaterielVerk (FMV) (Defence Materiel Administration) to procure a suitable replacement ...
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L2A2 SUIT Sight
The SUIT sight is a 4× prism sight with tritium-powered illumination, utilised at dusk or dawn. The full name is the L2A2 Sight Unit Infantry Trilux. The sight is not designed as a sniper sight, but as a standard issue infantry sight to improve the infantryman's night fighting capability and to assist target identification at long range in daylight and in poor light conditions. The sight was mounted on the L1A1 Self-Loading Rifle or GPMG. The SUIT sight was developed in the United Kingdom by Royal Armaments Research Development Establishment (RARDE) and is manufactured by Avimo Ltd., now known as Thales UK. It was first produced in 1976 by Avimo Ltd. in London and is regarded as an early optical combat sight. The SUIT sight was an optional optical sighting system for the British Army's L1A1 Self-Loading Rifle and was also used by the Australians and New Zealanders. It was not widely issued amongst nor used in combat by the British Infantry, Royal Marines and RAF Regiment. A s ...
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FN Minimi
The FN Minimi (short for ; "mini machine gun") is a Belgian 5.56mm or 7.62mm light machine gun, also classified as a squad automatic weapon developed by Ernest Vervier for FN Herstal. Introduced in the late 1970s, it is in service in more than 75 countries. The weapon is manufactured at the FN facility in Herstal and their U.S. subsidiary FN Manufacturing LLC. The Minimi fires from an open bolt. It is an air-cooled, gas operated long-stroke piston weapon that is capable of fully automatic fire only. It can be belt fed or fired from a magazine. The Minimi is configured in several variants: the Standard model as a platoon or squad support weapon, the shortened Para version for paratroopers and the Vehicle model as secondary armament for fighting vehicles. Design details Operating mechanism The Minimi uses a gas-actuated long-stroke piston system. The barrel is locked with a rotary bolt, equipped with two massive locking lugs, forced into battery by a helical camming guide ...
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Tritium Illumination
Tritium radioluminescence is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light. Tritium emits electrons through beta decay and, when they interact with a phosphor material, light is emitted through the process of phosphorescence. The overall process of using a radioactive material to excite a phosphor and ultimately generate light is called radioluminescence. As tritium illumination requires no electrical energy, it has found wide use in applications such as emergency exit signs, illumination of wristwatches, and portable yet very reliable sources of low intensity light which won't degrade human night vision. Gun sights for night use and small lights (which need to be more reliable than battery powered lights, yet not interfere with night vision or be bright enough to easily give away one's location) used mostly by military personnel fall under the latter application. History Tritium was found to be an ideal energy source for self-luminous com ...
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CETME Model L
The CETME Model L is a Spanish 5.56×45mm NATO assault rifle developed in the late 1970s at the state-owned small arms research and development establishment CETME (''Centro de Estudios Técnicos de Materiales Especiales'') located in Madrid. The rifle retains many of the proven design elements the institute had used previously in its CETME rifle, CETME Model 58 battle rifles.Woźniak, Ryszard. Encyklopedia najnowszej broni palnej - tom 1 A-F. Bellona. 2001. pp140-141. The weapon was successfully trialled between 1981–1982 and approved for serial production in 1984 at the Empresa Nacional Santa Bárbara factory (currently Santa Bárbara Sistemas, integrated into General Dynamics, General Dynamics European Land Combat Systems division).Walter, John: ''Rifles of the World (3rd ed.)'', page 83. Krause Publications, 2006. The Model L replaced the 7.62×51mm NATO, 7.62mm CETME Model C in service with the Spanish Army and the first rifles were delivered in 1987, by which time orders fo ...
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Reticle
A reticle or reticule, also known as a graticule or crosshair, is a pattern of fine lines or markings built into the eyepiece of an optical device such as a telescopic sight, spotting scope, theodolite, optical microscope or the electronic visual display, screen of an oscilloscope, to provide frame of reference, measurement references during visual inspections. Today, engraved lines or embedded fibers may be replaced by a digital image superimposed on a screen or eyepiece. Both terms may be used to describe any set of patterns used for aiding visual measurements and calibrations, but in modern use ''reticle'' is most commonly used for weapon sight (device), sights, while ''graticule'' is more widely used for non-weapon measuring instruments such as oscilloscope#Graticule, oscilloscope display, astronomic telescopes, microscopes and microscope slide, slides, surveying instruments and other similar devices. There are many variations of reticle pattern; this article concerns its ...
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Advanced Combat Optical Gunsight
The Advanced Combat Optical Gunsight (ACOG) is a series of prismatic telescopic sights manufactured by Trijicon. The ACOG was originally designed to be used on the M16 rifle and M4 carbine, but Trijicon has also developed ACOG accessories for other firearms. Models provide fixed-power magnification levels from 1.25× to 6×. ACOG reticles are illuminated at night by an internal tritium phosphor. Some versions have an additional daytime reticle illumination via a passive external fiberoptic light pipe or are LED-illuminated using a dry battery. The first ACOG model, known as the TA01, was released in 1987. History The first ACOG model, known as the TA01, was released in 1987. An example was tested on the Stoner 93 in the early 1990s by the Royal Thai Armed Forces. In 1995, United States Special Operations Command selected the 4×32 TA01 as the official scope for the M4 carbine and purchased 12,000 units from Trijicon. Between 2004 and 2005, the TA31RCO-A4 & M4 (AN/PVQ- ...
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Specter (sight)
The Elcan Specter is a line of multi-role prism sights created by ELCAN Optical Technologies, Raytheon ELCAN Optical Technologies originally designed for M16 rifle, M16/M4 carbine, M4 family of rifles but now also exists for light machine gun and heavy machine guns. Most of the optics are capable of switching between magnifications and illumination. History The Specter was developed by Raytheon Six Sigma Product Development Team under ELCAN Optical Technologies, Raytheon ELCAN Optical Technologies for the United States Naval Surface Warfare Center to fill the requirement for the "SOPMOD rifle kit SU-230/PVS Articulated Telescope NSN 1240-01-533-09039", development was started in 2003 with the goal to fix the general issue of transition between long-range engagements/operation to short range engagement/operations(CQB) that would leave the soldier vulnerable while switching optics. The solution found by ELCAN was to merge a telescopic sight with a red dot sight by using a rotating ...
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British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve personnel and 4,697 "other personnel", for a total of 108,413. The British Army traces back to 1707 and the Acts of Union 1707, formation of the united Kingdom of Great Britain which joined the Kingdoms of Kingdom of England, England and Kingdom of Scotland, Scotland into a Political union, single state and, with that, united the English Army and the Scots Army as the British Army. The Parliament of England, English Bill of Rights 1689 and Convention of the Estates, Scottish Claim of Right Act 1689 require parliamentary consent for the Crown to maintain a peacetime standing army. Members of the British Army swear allegiance to the Charles III, monarch as their commander-in-chief. The army is administered by the Ministry of Defence (United Kingd ...
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HK G36
The Heckler & Koch G36 (Gewehr 36) is an assault rifle designed in the early 1990s by German weapons manufacturer Heckler & Koch. It is chambered in 5.56×45mm NATO, and replaced the heavier G3 battle rifle chambered in 7.62×51mm. The G36 was accepted into service with the in 1997. Since then, it has been a popular export, and has seen active service in military and police units in several countries, including Germany, Spain, and the United Kingdom. The G36 is gas-operated and feeds from a 30-round detachable box magazine or 100-round C-Mag drum magazine. In 2012, the G36 was found to suffer from significant accuracy issues due to thermal expansion of the barrel, prompting a search for a replacement. In 2017, the launched the ''System Sturmgewehr Bundeswehr'', a program designed to field a replacement for the G36. The weapons put forth were the Heckler & Koch HK416, Heckler & Koch HK433, and the Haenel MK 556. The G95A1 and G95KA1, both variants of the HK416, were selec ...
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