40 mm artillery

The 2-pounder gun, officially designated the QF 2-pounder (QF denoting "quick firing") and universally known as the pom-pom, was a 40-millimetre (1.6 in) British autocannon, used as an anti-aircraft gun by the Royal Navy.

The Bofors 40 mm gun, often referred to simply as the Bofors gun, is an anti-aircraft/multi-purpose autocannon designed in the 1930s by the Swedish arms manufacturer AB Bofors.

The CIS 40 AGL is a 40 mm automatic grenade launcher, developed in the late 1980s and produced by the Singaporean defence firm − Chartered Industries of Singapore (CIS, now ST Kinetics).

The GMG (Granatmaschinengewehr or "grenade machine gun") is an automatic grenade launcher developed by Heckler & Koch for the German Army.

The Mk 19 grenade launcher (also known as the Mark 19) is an American 40 mm belt-fed automatic grenade launcher that was first developed during the Vietnam War.

The M42 40 mm Self-Propelled Anti-Aircraft Gun, or "Duster", is an American armored light air-defense gun built for the United States Army from 1952 until December 1959, in service until 1988.

The 40M Nimród was a World War II Hungarian self-propelled anti-aircraft gun based on a license-built copy of the Swedish Luftvärnskanonvagn L-62 Anti II tank.

The 4.2 cm Pak 41 was a light anti-tank gun issued to German airborne units in World War II.

The Mk 47 or Striker 40 is a 40mm automatic grenade launcher with an integrated fire control system, capable of launching smart programmable 40mm shells in addition to various unguided rounds.

The Denel Y3 AGL is a South African-manufactured automatic grenade launcher currently manufactured by Denel Land Systems.

The Ordnance QF 2-pounder (QF denoting "quick firing"), or simply "2 pounder gun", was a 40 mm (1.575 in) British anti-tank and vehicle-mounted gun, employed in the Second World War.

Luftvärnskanonvagn L-62 anti II, also known as Landsverk anti-II or L-62 or locally ItPsv 41, was a Swedish self-propelled anti-aircraft gun that was developed specifically for Finland between 1941 and 1942.

DARDO ("Dart" in Italian) is a close-in weapon system (CIWS) built by the Italian companies Breda and Oto Melara.

CTA International is an equal-shares joint venture company between defence companies Nexter and BAE Systems.

The Mk 18 Mod 0 was a 40x46mm grenade launcher used by the US Navy during the Vietnam War and also the last known hand crank operated firearm since the Gatling gun.

The Hotchkiss gun can refer to different products of the Hotchkiss arms company starting in the late 19th century.

The Vickers Class "S" was a 40 mm (1.57 in) cannon used to arm British aircraft for attacking ground targets in the Second World War.

The 1.59-inch Breech-Loading Vickers Q.

The Howa Type 96 automatic grenade launcher (AGL) (96式40mm自動てき弾銃 96-shiki 40-miri jidōtekidanjū), is a Japanese automatic grenade launcher made by Howa since 1996.

The Ho-301 was a Japanese 40 millimeter calibre autocannon that saw limited use during World War II, on Japanese Army Nakajima Ki-44 and Kawasaki Ki-45 KAI aircraft.

The Mk 20 Mod 0 was a 40mm automatic grenade launcher manufactured by NOS Louisville and was used by the US Navy during the Vietnam War.