MKb 42(H) First Appearance

I wrote about Sturmgewehr intel before, but here's an even earlier appearance:

"Main data:

1. Automatic fire provided by gunpowder gases passing through the gas opening.
2. The barrel locks via the bolt tilting.
3. Uses a special shortened round, similar to the rifle ones.
4. Range: up to 800 meters.
5. Has a selector for automatic and single-shot fire.
6. Equipped with a bayonet for hand to hand combat."

The intelligence brief reads:

"Carbine-machinegun MK-42

The model 1942 7.92 mm carbine-machinegun with a 30-36 round special magazine (uses shortened 7.92 mm rifle bullets) is carried on a strap affixed to the stock and across from the bayonet lug. It's easy to disassemble. Judging by the design, the magazine is also used as a foregrip (there is no sign of an attachable bipod). Externally, the gun is composed of the following parts:

1. Barrel
2. Front sight with safety
3. Gas piston pipe
4. Barrel shroud
5. Rear sight
6. Bolt
7. Magazine
8. Base with pistol grip and trigger guard
9. Stock with an opening for accessories

The striker mechanism of the machinegun-carbine is composed of the following parts:

1. Gas piston
2. Operating slide
3. Bolt base
4. Bolt (there is a safety on the bolt plunger and a handle for pulling it back)

The bolt is composed of the following parts:

1. Bolt case
2. Extractor
3. Firing pin

Judging by the design of the cooling system, it can be expected that the rate of fire and automatic qualities of the machinegun-carbine are not high."

Sturmgewehr Usage

Some of you may have wondered when the Soviets noticed that the Sturmgewehr has joined the arsenal of German infantry. Wonder no more! Via kris-reid:

"To the People's Commissar of Defense, Marshal of the Soviet Union, comrade I.V. Stalin:

Since the Spring of this year, forces of the Kalinin, and then Volkhov and Leningrad Fronts have captured, among other weapons, several specimens of new German automatic 7.92 mm carbines, which are a new type of infantry weapon that has not been previously used by the Germans in large amounts until recently."

The date on this document is April 16th, 1943. Here's the intel obtained on this mysterious weapon:

"Enemy tactics and technology

Engineer-Captain Ya. Krutik

1. New German handheld machinegun

The German army has recently adopted a new handheld machinegun, using an intermediate round (an average between a rifle round and a pistol round). The machinegun's designation is "MK belash 42 (H)". The automatic mechanism is driven by redirection of gases through an opening in the barrel.

The machinegun can fire automatically or in single shots, for which a switch is present in the trigger guard, next to the pistol grip.

The machinegun is fed with a box magazine, which holds 35-38 rounds.

• Caliber: 7.9 mm
• Length: 935 mm
• Mass: about 5 kg
• Round mass: 16.8 g
• Bullet mass: 8.2 g"

The translator was a little presumptuous. "MKb" stands for Maschinen Karabiner, or machine carbine. Also, the magazine capacity has grown somewhat from the 30 rounds it actually contained. Otherwise, this intelligence is correct.

Precision Comparison

In 1948, it was clear that the PPSh has served its time, and a new, more powerful automatic infantry weapon was necessary, using an intermediate 7.62x39 mm mod. 1943 cartridge. Several weapons were designed to Tactical-Technical Specification #3131 and tested along with their submachinegun ancestor and the German Sturmgewehr for comparison.

The columns represent the radii of dispersion for bursts while prone and single fire while prone. R100 gives the full radius, and Ч50 gives the mean radius. The rifles are as follows:

• AS-44 type 7 (with 3 vent openings)
• AS-44 (no changes)
• Kalashnikov assault rifle
• Dementyev assault rifle
• Bulkin assault rifle
• Korobov assault rifle
• Submachinegun model 1941 (PPSh)
• MP-44 (Sturmgewehr)

And the last row is the precision requirement. The summary reads:

"The AS-44 with vent openings (type 7) surpasses all other assault rifles: in Ч50 by 2-4 times, and in R100 by 2.3-7 times. The precision when firing in full auto mode matches requirements."

It is also interesting to note that the famous Kalashnikov made the list. Despite being less precise than the modified AS-44 and failing TTT#3131, the weapon surpasses the Sturmgewehr in all criteria except single fire mode while prone, where the latter has a slight advantage.

AK Trials

"Conclusions: 

1. The 7.62 mm Kalashnikov assault rifle with a model 1943 round satisfies requirement #3131 in reliability of the automatic system, lifespan of components, usage characteristics, and overall, and can be recommended for mass production and subsequent military trials.
2. The Kalashnikov assault rifle does not fully satisfy requirement #3131 in the category of precision. However, as when firing single shots it greatly surpasses the model 1941 SMG, and is equivalent when firing in fully automatic mode, the Kalashnikov assault rifle can be recommended for military trials with existing precision. 

Recommendations:

1. Assault rifles, produced according to requirement #3132, which were composed according to military suggestions after AS-44 trials and previous proving grounds trials, are a step forward compared to the AS-44 as assault rifles matching modern requirements.
2. The best performance of all was by the Kalashnikov assault rifle, which, due to its reliability, component lifespan, and overall, satisfies the requirements, and can be recommended for mass production and military trials with its existing precision, as it is not less than the precision of the AS-44, and the assault rifle surpasses the PPSh-41 in all characteristics."

Tezka also has some more details on the trials. The comparison was between the new Kalashnikov, Bulkin, and Dementyev rifles, compared with the PPSh, PPS, and MP-44. Also, more results:

"When firing in bursts while prone, all assault rifles are equivalent, do not satisfy requirement #3131, and are inferior to the model 1941 submachinegun.

...

When firing in single shot, all are superior to the model 1941 submachinegun, and likewise equivalent."

Additionally, he states that, ergonomically, all assault rifles were superior to the PPSh-41.