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M242 Bushmaster
The M242 Bushmaster is a 25mm chain-driven autocannon that arms the M2/M3 Bradley and LAV-25, fires NATO 25x137mm ammunition, and is now produced by Northrop Grumman.
M249 light machine gun
The M249 light machine gun, formerly the M249 Squad Automatic Weapon, is the American adaptation of the Belgian FN Minimi, the US Army's standard squad automatic weapon from the mid-1980s.
M25 motorway
The M25, formally the London Orbital Motorway, is a motorway running in a roughly circular route around Greater London, managed by National Highways and known for severe congestion.
M25 Sniper Weapon System
The M25 Sniper Weapon System, also known as the M25 rifle, is a semi-automatic sniper rifle based on the M14, developed for US Army Special Forces in the late 1980s.
M252 mortar
The M252 is an American 81 mm medium mortar adapted from the British L16, used by the Army and Marine Corps since 1987 for long-range indirect fire support.
M256 (gun)
The M256 is a 120 mm L/44 smoothbore tank gun, a US version of the German Rheinmetall 120 mm gun, serving as the main armament of the Abrams.
M26 grenade
The M26 grenade, nicknamed the "lemon," is an American fragmentation hand grenade with a smooth steel body, first used in combat during the Korean War in 1953.
M26 Modular Accessory Shotgun System
The M26 Modular Accessory Shotgun System, also known as the XM26 Lightweight Shotgun System, is a 12-gauge bolt-action shotgun that mounts under an M4 carbine or works stand-alone.
M26 Pershing
The M26 Pershing, or Pershing tank, was an American tank with a 90 mm gun that saw combat in the final weeks of World War II.
M26 rocket
The M26 is an American unguided artillery rocket carrying 644 submunitions, fielded in 1983 as the basic rocket of the M270 Multiple Launch Rocket System.
M270 Multiple Launch Rocket System
The M270 Multiple Launch Rocket System (MLRS) is an armored, tracked multiple rocket launcher on a Bradley-derived chassis, fielded by the U.S. Army in 1983 and first used in combat in 1991.
M3 Bradley
The M3 Bradley, or Cavalry Fighting Vehicle, is an American tracked scout vehicle that entered Army service in 1981 and carries two scouts plus TOW anti-tank missiles.
M3 Lee
The M3 Lee, or Grant tank, was an American World War II medium tank whose 75 mm gun sat in a fixed hull sponson, serving in North Africa before the M4 Sherman replaced it.
M3 Stuart
The M3 Stuart, formally Light Tank M3, was an American World War II light tank armed with a 37 mm gun, nicknamed Honey by British troops for its reliability.
M3 submachine gun
The M3 submachine gun, known as the "grease gun," was a .45-caliber automatic weapon adopted by the US Army in 1942 as a cheaper Thompson replacement.
M31 GMLRS
The M31 GMLRS is the unitary-warhead variant of the Guided Multiple Launch Rocket System, a GPS-guided rocket fired from M270 and M142 HIMARS launchers with a 70-kilometer range.
M310 (reactor)
The M310 is a French-designed three-loop pressurized water reactor of about 1,000 MW supplied by Framatome, with two units at Daya Bay starting up in 1994 and two at Ling Ao in 2002.
M320 Grenade Launcher Module
The M320 Grenade Launcher Module is a single-shot 40mm grenade launcher of the United States Army and Marine Corps, which replaced the M203 series starting in 2009.
M36 tank destroyer
The M36 tank destroyer, also known as the M36 Jackson, was an American World War II armored fighting vehicle carrying a 90 mm gun on an M10 chassis.
M39 Enhanced Marksman Rifle
The M39 Enhanced Marksman Rifle (M39 EMR) is a semi-automatic 7.62×51mm NATO designated marksman rifle the US Marine Corps built from M14 DMRs, entering service in 2008.
M3U
M3U (MP3 URL) is a plain-text playlist file format that lists media file paths or stream URLs one per line, created for the Winamp media player in the late 1990s.
m4 (computer language)
m4 is a general-purpose macro processor for Unix, designed by Brian Kernighan and Dennis Ritchie at Bell Labs in 1977, used chiefly by GNU Autoconf.
M4 carbine
The M4 carbine is a 5.56 mm selective-fire carbine adopted by the US military in 1994 as a shorter, lighter variant of the M16 rifle.
M4 motorway
The M4, also known as the London-South Wales Motorway, is a British motorway running from London via Bristol and the Severn Bridge into South Wales.
M4 Sherman
The M4 Sherman, also called the Sherman tank, was the standard American medium tank of World War II, produced from 1942 to 1945 in numbers approaching 50,000.
M4 Sherman variants
The M4 Sherman variants, also known as Sherman tank variants, were the American medium tanks built from 1942 to 1945, with 49,234 produced on one chassis.
M40 recoilless rifle
M40 recoilless rifle: US 105mm-bore (designated 106mm) crew-served antitank recoilless rifle of the mid-1950s, replacing the M27; 209.5 kg, 500 m/s, HEAT/HEP/APERS ammunition; replaced by TOW in 1970 but still widespread in Asia, Africa, the Middle East, and South America.
M40 rifle
The M40, or M40 sniper rifle, is a bolt-action sniper rifle used by the United States Marine Corps since 1966, built on the Remington Model 700 action.
M41 Walker Bulldog
The M41 Walker Bulldog, also known as the M41 light tank, is an American light tank built by Cadillac from 1951 to 1954 to replace the M24 Chaffee.
M46 Patton
The M46 Patton was an American medium tank of the early Cold War, created in 1948 by upgrading the M26 Pershing with a new powertrain and improved 90mm gun.