Mk 11 mod 5 (20 mm)

Description

The Mk 11 mod 5 cannon is a 20 mm cannon fitted into the Mk 4 Mod 0 aicraft gun pod that could be fitted to the bomb rack. It was developed by the US navy and used in planes like the A-4, F-4 or OV-10. Its main use is for an air-to-ground attacks. It was extensively used during the Vietnam conflict.

Vehicles equipped with this weapon

• A-4B (Suspended)
• A-4E Early (Suspended)

General info

The 20 mm Mk 11 mod 5 cannon can fire up too 4,000 rounds per minute, with a muzzle velocity of 1012 m/s. Its one-second burst mass is 7.33 kg. The AP shells can penetrate up to 33 mm of armor. The HE shell carries 14 g of explosive, a few hits should be able to destroy a wing or heavily damage any other part of the plane. Maximum effective range of this cannon is up to 2,000 m.

Available ammunition

• Default: AP-T · HEI · AP-T

Penetration statistics
Belt	Penetration @ 0° Angle of Attack (mm)
	10 m	100 m	500 m	1,000 m	1,500 m	2,000 m
Default	33	31	27	24	19	14

Comparison with analogues

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

Usage in battles

The Mk11 mod 5 20mm is a great choice for multi tasking in battles. Use it either against ground targets such as pillboxes, AAA, machine guns and other ground targets. The best option is to take it with 2 Aim-9B or to take 3 of them if you would like to ground pound some artileries.

Pros and cons

Pros:

• Very high rate of fire (4,000 rpm)

Cons:

• Low armour penetration
• Huge ammo count (3 x 750 rpg) is quickly used at 4,000 rpm.

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 If the historical reference turns out to be too long, take it to a separate article, taking a link to the article about the weapon and adding a block "/History" (example: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

Excellent additions to the article would be video guides, 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

• The U.S. Navy training film (MN 10121a) showcasing the Mark 4 Gun Pod
• Report No. HTC-63-56 2Omm Mk 4 Mod 0 Gun Pod Flight Test of Three Pods Installed on A4 Airplane