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Ou Hantao nodded, understanding Yang Tianfeng's arrangement. According to the scale of production of the arsenal, of course, it will take a long time to meet the requirements for the refitting of the troops. Yang Tianfeng has already explained that this is an infantry weapon, that is, it needs one per person, and the number is not tens of thousands?

But one thing Ou Feng Hantao is not wrong, the assault rifle and the point 50 heavy sniper named "Destroying the Sun" by Yang Tianfeng are indeed the products that he lit the lamp and boiled oil, after many times of meditation and weighing left and right, and repeated research and calculation.

Before the Second World War, the armies of various countries were mainly armed with four types of firearms: rifles, submachine guns, machine guns and pistols. And as the main equipment for military operations, it is mainly rifles, submachine guns and machine guns.

Submachine guns are sharp weapons for close combat, they fire smaller pistol bullets, and the range is generally not more than 150 to 200 meters, and the actual combat is mainly concentrated within 50 to 100 meters. It has a fairly good suppressive power and surface killing ability. However, submachine guns use pistol bullets with a small charge, and bullets that exceed 150 meters are generally not lethal and basically inaccurate.

As for the rifle, it is a medium and long-range combat tool, with an effective range of more than 400 meters and a killing range of even more than 800 meters. But the rate of fire of the rifle is very low, and good marksmen generally shoot no more than 12 rounds per minute, and the firepower is relatively weak.

A machine gun, on the other hand, is something that is used to enhance the firepower of a rifle, and both heavy and light machine guns fire the same rifle bullets as a rifle. Its range is much the same as that of the Power Sync Gun, but the advantage is that it has a high rate of fire, which compensates for the lack of firepower.

This combat system was very effective in the trench operations of World War I. However, after entering World War II, with the development of science and technology and military tactics, especially armored weapons, multi-person controlled firearms and light and medium artillery, the actual combat distance of infantry was greatly reduced. In actual combat, more than seventy percent of the operations took place within 400 meters.

At this distance, the countries were armed with conventional rifles with insufficient firepower (insufficient rate of fire) and excessive ammunition (the range was more than 600 meters). And the range of the submachine gun is not enough, the power of the bullet beyond 100 meters is too small, and the shooting accuracy is too poor.

As a result, there is a fire gap from 150 to 400 meters in the fire control areas of various countries. At that time, countries mainly used light machine guns to make up for this gap. However, the number of light machine guns equipped by various countries is limited after all, resulting in insufficient firepower. Moreover, rifle bullets fired from light machine guns are too powerful at this distance, and they are obviously unnecessary.

In fact, many countries noticed this problem at that time, and their main research results were: semi-automatic rifles and automatic rifles. The research on semi-automatic rifles in various countries was relatively successful, and during World War II, led by the M1 Garand semi-automatic rifle of the United States, the Soviet Union and Germany all developed their own semi-automatic rifles, and a large number of troops were equipped.

Although semi-automatic rifles can meet this need to a certain extent, the traditional rifle bullets fired by semi-automatic rifles are too powerful. Moreover, it cannot fire continuously, and in terms of firepower, it cannot fight machine guns. Therefore, semi-automatic rifles can only be used as an upgrade of traditional rifles, and cannot achieve their original combat purpose.

The development and development of automatic rifles is limited by the concept of using powerful traditional rifle bullets, resulting in the infantry being unable to effectively control the violent beating of the gun body when firing continuously, and thus unable to equip the troops.

And Yang Tianfeng took out the drawings of the assault rifle, although it was not the first in the world to put forward the idea of the integration of infantry and rush, but the concept of the middle gun and bullet that he plagiarized was an original invention at that time. It was not until a year before the German company Hernell invented a short rifle bullet (also known as an intermediate power bullet) that was one-third shorter than a traditional rifle bullet.

Although it was only an innovation in the concept, the invention of the intermediate power bullet made it easier to control the automatic rifle when firing continuously. At the same time, the automatic rifle can also carry more ammunition, which increases the firepower.

Yang Tianfeng had the innovative idea of intermediate power bullets, so he abandoned the Bobosha submachine gun he once wanted to imitate (simple to make, reliable and durable), and directly produced more advanced assault rifles.

The manufacturing process is simple, a large number of stamping processes are used, the cost is low, and it is easy to manufacture in large quantities, and the AK47, which has so many advantages, is of course one of Yang Tianfeng's first choices. However, the 7.62mm bullet it used has become a difficult factor for Yang Tianfeng.

You must know that it is not easy for a country to re-prepare a complete set of new ammunition systems in a war and meet the needs of combat, let alone the scale of the Yongcheng Arsenal!

Therefore, Yang Tianfeng thought about it again and again, and had to study and learn from the German STG44 assault rifle (also known as MP-43/MP-44). Because the bullet used in the STG44 assault rifle is still 7.92 mm caliber, only the length of the cartridge case is shortened by one-third, and the charge is reduced by almost half. In this way, the original Mauser bullet production line did not need to be significantly changed, and his concerns about ammunition production problems were largely solved.

In addition, because the caliber of the bullets used remains the same, the barrels and other parts of the existing Zhongcheng and Hanyang-made rifles can be disassembled and used, which can greatly reduce the workload of the arsenal.

The main structure of the AK47, the caliber and cartridges of the STG44, although it seems that they are only minor changes, many parts of the gun need to be adjusted. This is a rather time-consuming and labor-intensive project, Yang Tianfeng did not repeatedly process and debug in the factory, but only relied on the calculation on paper to scale and adjust, and was able to come up with a basically complete drawing, which is completely unimaginable in the eyes of others.

The 12.7mm heavy sniper rifle, after the successful imitation of the Browning 12.7mm heavy machine gun in the arsenal, the main technical obstacles basically disappeared.

Combining the advantages of the American Barrett and the Russian OSV-96, this heavy sniper is designed to weigh 26 kilograms, with a highly efficient double-bore right-angled arrow-shaped (V-shaped) muzzle brake, and an easily disassembled butt with a cushion to reduce recoil, so that the shooter can fully withstand it.

At the same time, it has the advantage of "large caliber" and "semi-automatic". The ten-round magazine feed, equipped with a folding bipod, makes shooting and aiming more stable, and the shooter does not have to change the original shooting position when firing a shot, so the shooting effect on moving and hidden targets is significantly improved, and the probability of successfully hitting the target at long distances is greatly increased.

Moreover, due to the successful development of thin-shell ammunition, this heavy sniper can also fire armor-piercing deflagration shells and high-explosive shells, which have a certain destructive effect on armored targets, pillboxes, and firing points.

At the same time, in order to ensure the accuracy of the sniper, Yang Tianfeng asked the arsenal to use the hook knife cutting method to process the barrel and rifling when manufacturing heavy snipers, instead of the combined ring knife broaching method used now.

The hook cutting method is a relatively old rifling processing method, which is more labor-intensive and time-consuming, and is not suitable for a large number of industrial production. However, this processing method has less damage to the metal structure of the barrel and is suitable for processing high-precision barrels. There are some gunsmiths in Europe who use this method to make high-precision guns.

Moreover, the hook knife broaching method can be used to process the barrel by the people. Simple manual wooden machinery has existed very early in history, and in the nineteenth century there were old rifling cutters that were still manual. That is, large-scale industrial production is not suitable, but folk workshops can be used. Although it is time-consuming, it can also reduce the burden on the arsenal.

"Some parts may be out of size." Yang Tianfeng was not 100% sure of the paper work, so he reminded Ou Hantao, who was watching the drawings, "This memory is not guaranteed to be absolutely correct." Therefore, it is also necessary for the technical research team to finalize it in the manufacturing process. ”

Ou Hantao looked at the drawings and asked tentatively: "Assault rifle?" There are a lot of stamping processes, welding and riveting technologies, and I don't think the production efficiency will be low. In particular, the caliber of the barrel can be used to make samples of the disassembled rifle barrel and test the actual gun? ”

"Absolutely." Yang Tianfeng nodded with a smile and said, "This can save a lot of time!" ”

Such a method was also used by the Soviet Union, putting Mosin? The barrel of the Nagant rifle is split in two, which gives you the barrels of two Bobosha submachine guns. In the production of guns, the processing and manufacturing of gun barrels is undoubtedly a very high-tech and high-quality process, unlike ordinary parts, which can be produced by unskilled labor using very simple equipment.

For a moment, Yang Tianfeng almost wanted to take back the drawings and transform the submachine gun. But he still suppressed this idea of quick success. Because he was dealing with Japanese devils, and the assault rifle not only had the same fierce firepower as a submachine gun, but also had a good shooting accuracy at a range of three or four hundred meters, and its power was close to that of an ordinary rifle.

Moreover, for infantry weapons, this is probably the last equipment. His energy and intelligence, later on, will be focused on the breakthrough of heavy weapons. For example, airplanes, artillery, and maybe tanks. So, he wants to get it in one step.

Of course, according to the current scale of the arsenal, although it is still expanding, it is not possible to really equip the troops with the "extinguishing the sun" assault rifles and meet the ammunition consumption in battle.

Therefore, Yang Tianfeng must prepare in advance, manufacture in advance, and hoard equipment before it can be used in actual combat after the expected one or two years.

Even if the weapons are currently being mass-produced, the arsenal is constantly adjusting its production capacity and tilting production according to the different situations and operations, and this cannot fully meet the needs, especially the needs outside the New Seventh Army.

In this regard, Yang Tianfeng discussed with Ou Hantao and others, and once again selected some work to subcontract to private workshops or individuals. With the rental and purchase of simple machine tools, private workshops and individual workshops have made progress in production capacity and technical level, and can share more manufacturing tasks.

…………… (To be continued.) )