Dual Automatic Gun M2 (40 mm)

Description

The Bofors 40 mm is a heavy autocannon used mainly by the United States, occasionally finding use amongst the British and the German vehicles. Introduced around the Second World War, the Bofors 40 mm gave itself a good name due to its reliability as a cannon and general effectiveness.

Vehicles equipped with this weapon

• CCKW 353 AA
• Crusader AA Mk I
• M19A1
• M42
• ▅M42
• ␗M42

General info

The Bofors 40 mm has a medium rate of fire.

Available ammunition

Describe the shells that are available for the weapon and their features and purpose. If it concerns autocannons or machine guns, write about different ammo belts and what is inside (which types of shells).

Comparison with analogues

Give a comparative description of cannons/machine guns that have firepower equal to this weapon.

Usage in battles

Describe the cannon/machine gun in the game - its distinctive features, tactics of usage against notable opponents. Please don't write a "guide" - do not impose a single point of view, but give the reader food for thought.

Pros and cons

Summarise and briefly evaluate the weaponry in terms of its characteristics and combat effectiveness. Mark pros and cons as a list.

Pros:

• Powerful 40mm HEFI shells (Mk.II) with high amounts of explosive filler that can shred planes to pieces with succesful 1 hit.
• The AP, M81A1 rounds can easily deal with sides of medium tanks and can damage cannon barrel and tracks.
• Acceptable muzzle velocity for the gun.
• Acceptable rate of fire.

Cons:

• The 40mm shell penetrates up to 76mm, not enough to deal with some German SPAAs.
• Muzzle velocity and rate of fire are not really good.
• High leading angle is needed to hit the enemy aircraft.
• Not suitable gun for higher tiers, especially against jets.

History

Examine the history of the creation and combat usage of the weapon in more detail than in the introduction. If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: https://wiki.warthunder.com/(Weapon-name)/History) and add a link to it here using the main template. Be sure to reference text and sources by using <ref></ref>, as well as adding them at the end of the article with <references />.

Media

An excellent addition to the article would be a video guide, as well as screenshots from the game and photos.

See also

Links to the articles on the War Thunder Wiki that you think will be useful for the reader, for example:

• reference to the article about the variant of the cannon/machine gun;
• references to approximate analogues by other nations and research trees.

External links

Paste links to sources and external resources, such as:

• topic on the official game forum;
• encyclopedia page on the weapon;
• other literature.

Britain and USA anti-aircraft guns
7.92 mm	BESA
12.7 mm	M2HB
20 mm	GAI C01 · M168 · Oerlikon Mk.II · Polsten
25 mm	GAU-12U
30 mm	HSS 831L
35 mm	GA-35
37 mm	M1A2
40 mm	Bofors L/60 · Dual Automatic Gun M2 · M266
	Foreign:
23 mm	ZU-23 (USSR)
35 mm	Oerlikon KDA (Swiss)

Japan anti-aircraft guns
20 mm	Type 98 Anti-Air Gun
	Foreign:
12.7 mm	M2HB (USA)
20 mm	Rh202 (Germany)
35 mm	Oerlikon KDA (Swiss)
40 mm	M2 Dual Automatic Gun (USA)

China anti-aircraft guns
25 mm	PG87 · ZPT90
35 mm	PG99-35-2
37 mm	Type 65
57 mm	WA318
	Foreign:
12.7 mm	M2HB (USA)
20 mm	KwK30 (Germany)
40 mm	Dual Automatic Gun M2 (USA)

France anti-aircraft guns
13.2 mm	Hotchkiss Mle 1930
20 mm	GIAT M693/mod F2 · Oerlikon KAD (Swiss)
30 mm	HSS 831A
40 mm	Bofors L/60 · Mle. 1951 T1 (Bofors L/70)