Question: What is another name for the Barrett M82 based on it use of a cartridge that is the standard cartridge for NATO forces as well as many non-NATO countries?

Context paragraphs:
7.62×51mm NATO: The 7.62×51mm NATO (official NATO nomenclature 7.62 NATO) is a rimless bottlenecked rifle cartridge developed in the 1950s as a standard for small arms among NATO countries.  It should not be confused with the similarly named Russian 7.62×54mmR cartridge, a slightly longer rimmed cartridge.

5.56×45mm NATO: The 5.56×45mm NATO (official NATO nomenclature 5.56 NATO) is a rimless bottlenecked intermediate cartridge family developed in Belgium by FN Herstal.  It consists of the SS109, SS110, and SS111 cartridges.  Under STANAG 4172, it is a standard cartridge for NATO forces as well as many non-NATO countries.  It is derived from, but is not identical to, the .223 Remington cartridge.

Euro-Atlantic Partnership Council: The Euro-Atlantic Partnership Council (EAPC), a post-Cold War NATO institution, is a multilateral forum created to improve relations between NATO and non-NATO countries in Europe and those parts of Asia on the European periphery.  States meet to cooperate and go to the range of political and security issues.  It was formed on May 29, 1997 in the ministers meeting of Sintra, Portugal, as the successor to the North Atlantic Cooperation Council (NACC), which was created in 1991.  It works alongside the Partnership for Peace (PfP), created in 1994.

Barrett M82: The Barrett M82, standardized by the US Military as the M107, is a recoil-operated, semi-automatic anti-materiel rifle developed by the American Barrett Firearms Manufacturing company.  It is used by many units and armies around the world.  Despite its designation as an anti-materiel rifle, it is used by some armed forces as an anti-personnel rifle.  It is also called the Light Fifty for its .50 BMG (12.7×99mm NATO) chambering and significantly lighter weight compared to previous applications.  The weapon is found in two variants, the original M82A1 (and A3) and the bullpup M82A2.  The M82A2 is no longer manufactured, though the XM500 can be seen as its successor.

.50 BMG: The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s.  Entering service officially in 1921, the round is based on a greatly scaled-up .30-06 cartridge.  Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries.  The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds.  The rounds intended for machine guns are linked using metallic links.

7×57mm Mauser: The 7×57mm cartridge, also known as the 7mm Mauser, 7×57mm Mauser, 7mm Spanish Mauser in the USA and .275 Rigby in the United Kingdom is a first-generation smokeless powder rimless bottlenecked rifle cartridge.  It was developed by Paul Mauser of the Mauser company in 1892 and adopted as a military cartridge by Spain in 1893.  It was subsequently adopted by several other countries as the standard military cartridge.  It is recognised as a milestone in modern cartridge design, and although now obsolete as a military cartridge, it remains in widespread international use as a sporting round.  The 7×57mm has been described as "a ballistician's delight".  Many sporting rifles in this calibre were made by British riflemakers, among whom John Rigby was prominent; and, catering for the British preference for calibres to be designated in inches, Rigby called this chambering the .275 bore after the measurement of a 7 mm rifle's bore across the lands.

Loyal Arrow: Loyal Arrow (also known as Loyal Arrow 2009, Loyal Arrow 09) was a major exercise of the North Atlantic Treaty Organization (NATO) held in Northern Sweden in 8 June 2009 – 16 June 2009.  Ten NATO and non-NATO countries will participate in the live fire exercises, which is aimed to train selected parts of the NATO Response Force Joint Force Air Component Headquarters in the conduct and coordination of air operations.

Major non-NATO ally: Major non-NATO ally (MNNA) is a designation given by the United States government to close allies who have strategic working relationships with U.S. Armed Forces but are not members of the North Atlantic Treaty Organization (NATO).  While the MNNA status does not automatically include a mutual defense pact with the United States, it does confer a variety of military and financial advantages that otherwise are not obtainable by non-NATO countries.

South Armagh Sniper (1990–1997): The South Armagh Sniper is the generic name given to the members of the Provisional Irish Republican Army's (IRA) South Armagh Brigade who conducted a sniping campaign against British security forces from 1990 to 1997.  The campaign is notable for the snipers' use of .50 BMG calibre Barrett M82 and M90 long-range rifles in some of the shootings.

5.8×42mm: The 5.8×42mm / DBP87 ("Dàn (弹) Bùqiāng (步枪) Pŭtòng (普通), 1987"; literally "Standard Rifle Cartridge, 1987") is a military rimless bottlenecked intermediate cartridge developed in the People's Republic of China.  There is limited information on this cartridge, although the People's Liberation Army says that it is superior to the 5.56×45mm NATO and 5.45×39mm Soviet cartridges.  Another variant called the DBP88 “heavy round” was designed specifically for squad automatic weapons and designated marksman rifles.  The 5.8×42mm “heavy round” cartridge has the same dimensions as the standard 5.8×42mm cartridge, but utilizes a longer streamlined bullet with a heavy steel core for increased performance at extended ranges and penetration.  As of 2010 all 5.8×42mm cartridge variants are gradually succeeded by the DBP10 variant.

Supporting paragraphs: Barrett M82 .50 BMG
Answer: Light Fifty