MK Cannon

While the MK-101 was used by the German Luftwaffe mostly on the Russian front in the Heinkel 129, a heavily armored plane espec ially designed for ground attack, this type ol installation was also employed for tank-destroying purposes. And while it was designed for specific work and its over-all use was limited, it certainly tailed attention to the need for a 30-mm aircraft gun of this type with more fite power.

It was soon followed by another Rheinmetall development, the MK-10.-L I bis 30-mm automatic aircraft weapon was also gas operated, air cooled and belt fed. a metal disintegrating link being used. The feed was actuated by the recoil forces of the gun. The primei was fired electrically with (barging and seating being performed by compressed air. A muzzle brake was employed to reduce the shock of recoil. The rate of fire was 150 rounds a minute. Locking of the bolt was done when two swing-type locks were forced behind their locking keys in the barrel

extension body. A gas piston located beneath the barrel furnished the power to unlock and drive the bolt assembly to the rear, assisted by blow-back forces. The locking arrangement on this o o gun was practically identical with an experi

Firearm Magazines

Bolt Assembly of Rheinmetall's 30-rnm Automatic Aircraft Cannon, MK-103. Left: Bolt Mechanism Disassembled. Right: Bolt

Mechanism Assembled and in the Locked Position.

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