China used to be a copper poor country, so even bullets had to use steel bullets, but now there is no lack of copper, so it is normal for bullets to reuse copper bullets. After all, copper bullets have many more advantages than steel shells.

In the past, for China, the biggest disadvantage of the copper shell bomb was that there were no minerals in China and the output was small. Now the output of this thing is the first large copper gold mine found in Daqin, and it is rich in copper, which is extremely easy to mine. The preliminary calculation of copper reserves reached 11 million tons, and the half-life gold reserves exceeded 800 tons.

As for gold, don't be afraid that more gold will depreciate, because with the development of high technology, the use of gold in scientific and technological products will be higher and higher. Many industrial products use gold, so its output is not enough.

However, Jiang Yanhai's current use is still steel shells. Who makes the production of steel shells more? So this thing should be used up first. As for the later troops, they begin to replace copper shells and replace them in reality first.

When they reached the square below, Lin dianshuai hesitated and said, "aren't you afraid of Taotie's attack now?"

"It's all right. We have people staring at us. We can go up at any time." Jiang Yanhai smiled slightly.

He can't say that at the moment, there are three large UAVs reconnaissance at high altitude, and there are micro UAVs reconnaissance at low altitude. In fact, if you look carefully, you can still find it.

After all, the sky is cloudless at the moment, but they don't know what is flying in the sky. Even what they see is just curious. Moreover, the height of UAV is not low at the moment, and it looks like a bird.

"OK." Lin dianshuai nodded.

The manual spring chain installation machine is actually very simple. It is just a common machine. Place the dispersible spring chain on the palm wide workbench on the right side of the machine, and there is a special trapezoidal groove for feeding ammunition on the left side, just like the entrance of a machine such as processing corn.

Place the bullet warhead inside to the right, then turn the small crank next to it, turn it once, and a bullet will be automatically pushed from the machine entrance to the workbench on the right by something similar to a bolt, and then directly pushed into the dispersible metal bullet chain. Turn the bullet chain once, and a bullet will be installed automatically. The speed is still very fast.

However, this is manual after all, because there is no power here, so it is still troublesome to install this thing.

But this is actually very good. At least it can be used in China now. In the past, non dispersible bullet chains or semi dispersible bullet chains were used.

The oldest non dispersible elastic chain is the canvas chain during World War II. Insert bullets into the middle of the canvas and form a elastic chain one by one. However, after the machine gun is used, the canvas chain is still intact and can continue to be used.

However, the canvas chain is prone to failure, so during World War II, you can see that there must be a ammunition supplier next to the heavy machine gun to maintain the stability of the ammunition chain and ensure the stable output of the machine gun, and this canvas ammunition chain was abandoned after World War II.

After World War II, countries such as the former Soviet Union began to use metal non dispersible bullet chains.

To put it bluntly, the left side of your machine gun enters the bullet chain, but the cartridge case on the right side is thrown away. The non dispersible metal bullet chain is also connected to your machine gun. Imagine that the metal bullet chain is connected to the machine gun, which is not very convenient on the battlefield.

The metal detachable bullet chain, to put it bluntly, although the metal buckle for fixing a bullet is connected when it is obtained, after it is shot from the machine gun, it will be directly dispersed like the cartridge case and thrown away at the same time.

Of course, the individual metal buckles thrown can also be manually connected together, manually refilled and manually connected again, but it's too troublesome. The Americans throw them away directly after the war.

Such a bullet chain is certainly helpful for the stable output capacity of the machine gun, but it is expensive, so it was used by local tyrants such as Lao Mei in the past.

Now it can be used at home.

Of course, the main reason is that the high firing speed machine gun such as rotary tube machine gun has better stability when using dispersible metal bullet chain.

In the past, the domestic use was semi dispersible. To put it bluntly, we couldn't afford to use things like Lao Mei and Mao Zi. We also affected the combat performance. Later, we simply thought of a way.

That is, the metal bullet chain bayonet can be disassembled and thrown once every 10 or 15 bullets.

When used in this way, it does not affect the performance. At the same time, when recycling, 10 or 15 bullets are connected once, which is not so troublesome.

Moreover, the length of the elastic chain can be freely controlled.

I can only say... There is no money.

If you have money, who doesn't want to use dispersible? As for recycling? Recycle a fart and throw it directly after shooting. If there are recycling conditions and such defensive operations, a large metal box will be directly placed on the side where the barrel machine gun throws away the cartridge case, and the cartridge case and cartridge chain will be directly thrown into the metal box.

At that time, go back directly and melt and remake the cartridge case and chain. This is the way of the rich. Now we can also have money.

Jiang Yanhai has passed the order to the logistics personnel. There are 50 manual chain installation machines. In fact, the machines are not large and small. They are about more than 30 centimeters long and the widest place is more than 10 centimeters. However, they are fixed on some worktables for convenience.

"Let me show you, it's actually very simple." in front of Jiang Yanhai's bullet chain installation machine, there are standing generals of the shadowless forbidden army, especially general Wu.

This machine is very small, but in general Wu's opinion, it is superb. Because it is so small, but it has such a complex structure, which is definitely a test for their blacksmiths. The mold alone needs to be very accurate.

The empty bullet chain next to it was like installing a machine gun. Jiang Yanhai picked it up and placed it on the workbench. Then he grabbed a 7.62mm bullet from the standard bullet box opened next to him. The bullet head was put into the entrance in the direction of the workbench, and then grabbed another one.

After putting in dozens of bullets, Jiang Yanhai directly turned the small handle.

"Click" made a clear sound. As Jiang Yanhai turned one circle, a bullet was immediately accurately stuck on the bullet chain, and then he turned the second circle.

Then, with the comments of Lin dianshuai and several generals, Jiang Yanhai's hand was fast, "click" and "click" sounded constantly, and bullets were accurately installed into the bullet chain, forming a long metal bullet chain.

Even at a very average speed, it's easy to rotate once a second. When dozens of bullet chains appeared there, Lin dianshuai and they all marveled.