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Why can World War II submachine guns be cheaper than rifles?
Why can World War II submachine guns be cheaper than rifles?

It is often said that the Stern submachine gun during World War II cost only $9 because of its minimalist design. It is estimated that many people have doubts about the price of weapons during World War II. Since the submachine gun that can shoot automatically costs only 9 dollars, what about the price of the rifle? Dogs, this article casually talks about the cost of submachine guns and rifles.

Stenden was indeed the cheapest submachine gun during World War II, but according to English information, its cost was actually 10 USD ... Well, 9 is not much different from 65,438+00. According to the inflation rate, it is about 140 dollars in modern times. Another very cheap submachine gun is the M3 grease gun of the American imperialists, which was about $ 15 in that year and about $2 15 in modern times after inflation. What was the price of that rifle at that time?

Kar 98 k: 28 dollars

M 1 garland: $3 1

Li enchang: 25 dollars.

Then the question is, why is a rifle more expensive than a submachine gun? Especially the moving bolt rifle is more expensive than the submachine gun, and the repeating is more complicated than the ancestor's?

Yes, in terms of structure and materials, rifles are more expensive than submachine guns.

First of all, pistol bullets fired by submachine guns often produce only about one-sixth of the kinetic energy of rifle bullets. According to Newton's third law, the reverse force exerted by submachine gun bullets on the bolt is only one sixth of that of rifle bullets. This gives the submachine gun a prerequisite for automatic shooting-inertial locking can be achieved with a simple free gun.

However, rifles can withstand the strong reaction of rifle bullets by locking with rotating bolts. This is not to say that the free bolt can't be used, but that if the rifle bullet uses this principle, the bolt must be very heavy, otherwise it will unlock the lock in advance, causing the shell and gunpowder gas to directly paste the chamber and then spray it on the face. However, the rotary bolt locking must have a nose with a locking tenon and an engaging sleeve with a clamping tenon. The structure is more complicated than the free bolt machine, and the cost naturally goes up.

And because the free bolt is pressed by that bolt, there is almost no pressure on the submachine gun shell, so we can see that most submachine guns used punch boxes during World War II. Although the stamping equipment is expensive, it is very cost-effective in terms of time and cost in mass production. On the other hand, when the rifle is locked, it must be placed in the housing or connecting sleeve. These pressure-bearing parts have to be milled, and the strength of stamping is completely untenable. The cost of milling is much higher than that of stamping.

And the barrel, submachine guns are melee weapons, and there is no need for such a long barrel. The barrel is one of the most expensive parts in a gun. For example, Stern's bucket is only 20cm, while Li Enchang is 64cm, which is the gap. There are only two rifling in the stern barrel, and there are five rifling in Li Enchang. Although the multi-point pin-pulling method generally pulls out more than one rifling at a time, the smaller the number of rifling, the smaller the pull-out resistance and the faster the machining speed. Submachine guns can also save a lot of money on the barrel.

There are other things that can be seen at a glance, such as the wooden body and butt of the rifle. Stenden only has stamping parts and welding parts, and even the stock is so insincere. At that time, the door of the submachine gun was a simple gap or hole, and the rifle had to have a set of gauges. The accuracy of submachine guns is not so important. The factors that affect the accuracy, such as trigger force and barrel details, will not be too particular when accepting, but the acceptance accuracy of rifles is much stricter than that of submachine guns.

Finally, by the way, speaking of pistols, the cost of M 19 1 1 in World War II was 15 dollars, just like the M3 grease gun. Although it is small and saves materials, its structure is actually more complicated than M3. Due to the size limitation of pistol, it is impossible to install a large and heavy free bolt (sleeve) like a submachine gun. Therefore, for 45 ACP and 9mm pistols, the principle of rigid locking barrel with short recoil is much more complicated than that of free gun. Moreover, the pistol is small in size and does not have as much space redundancy as the submachine gun, so the processing of parts is more detailed than that of the submachine gun, so it is slightly more expensive. Of course ... FP45, rifled, one-handed, printed in full, only worth 2. 1 USD, but it's best not to treat it as a serious pistol.