DEU - MG 213C/20 / MK 213C/30

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Mauser MG 213C/20 and MK 213C/30

Caliber:
MG 213C/20 - 20 mm
MK 213C/30 - 30 mm
Number of barrels:1
Barrel length:
Total length:
Weight of weapon:
C/20 - 75 kg
C/30 - 77 kg
Number of chambers: 5
Travel speed:
C/20 - 915 (other source:1050) m/s
C/30 - 550 (other source:530) m/s
Cadence:
C/20 - 1400-1500 bpm
C/30 - 1200 rpm
Manufacturer: Mauser Werke GmbH

Ammunition:
MG 213C/20 - 20x135 mm
Match: electric
Weight:
of the whole projectile 92 g (other source:112 g)

MK 213C/30- 30x85B mm
Firing pin: electric
Weight:
of the whole projectile 330 g

With the advent of jet technology in aviation during World War II, the question of increasing the cadence of the on-board weapons of fighter aircraft arose. After attempts to improve the characteristics of a conventionally conceived weapon (the MG 213A), German Mauser designers Anton Politzer and Werner Jungmann focused on a revolver gun powered by gases taken from the barrel. This design made it possible to achieve the required power, firing cadence and muzzle velocity while keeping the weight of the gun and the recoil magnitude at an acceptable level.
The two weapons, the MG 213C/20 and MK 213C/30, are quite identical in design, differing only in the slightly larger dimensions of the 30 mm version.
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The shot is fired in the upper receiver, identified with the barrel. A portion of the gases produced by the firing is diverted through a gas cylinder to a piston connected to the bolt carrier. A curve-shaped groove is provided in the carrier, ensuring the rotation of the drum through rollers on its circumference. After firing, the gases reach the piston and it begins to move towards the rear in conjunction with the carrier. The roller on the drum engages the groove on the carrier and rotates it. The drum rotates, when viewed from the rear, counterclockwise. At the same time, a cartridge slide, connected to the carrier, slides the cartridges in two stages into the chambers on the top and bottom right. An empty cartridge is ejected from the chamber on the top left and one chamber remains empty.
The cartridge belt is fed by means of a spool connected to the drum. The gap between the face of the drum and the barrel is sealed by movable sleeves. Because in this arrangement the bullet actually enters the barrel, the barrel has a progressive groove with zero rise at the origin.


The weapon became the basis of the post-war development of rapid-fire aircraft guns in Western Europe. The leaders of the MG 213C project were involved in the development of weapons in Great Britain (W.Jungmann - ADEN), France (A.Politzer-DEFA 550), Switzerland (F.Linder- Oerlikon KCA) and in the USA (O.v Lossnitzer - M39).
URL : https://www.valka.cz/DEU-MG-213C-20-MK-213C-30-t19509#72870 Version : 0
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