Doomsday Bunker Upgrade

It is not difficult to manufacture a Maxim machine gun. This antique model is even sold on a treasure, and its unique toggle recovery mechanism is not complicated in structure.

According to the drawings, Chen Xin used the system to transfer the materials from the storage room.

Although high-performance steel is required to manufacture machine guns, ordinary steel is enough for the system, and the rest of Chen Xin can be confidently handed over to the system.

With the help of the processing function of the workbench, the parts of Maxim were manufactured, and then these parts were assembled little by little, and soon a set of Maxim appeared on Chen Xin's workbench.

Although all the assembly has not been completed, Chen Xin has only completed the parts of the barrel and the bolt, not even the most important brackets. The unpainted gun body is completely the original metal color, which looks miserable. But it made no secret of the power emanating from this terrifying killing machine.

The Maxim heavy machine gun is the world's first truly successful automatic weapon powered by gunpowder gas. Once applied, it has become the most efficient killing machine in human history.

In the war that broke out between the Japanese and the Lucias, the war god Nogi Nogi, who was blown to the sky by the Japanese, led 60,000 people to attack the Lucian positions and adopted a very brainless pig rushing tactics. He was killed within three hours. Five thousand people.

Although the Lucias were finally defeated, by the time of the final attack, Nogi Nogi's 60,000 soldiers had already suffered more than 30,000 casualties.

In the First World War, Maxim won the title of widow maker with his terrifying killing efficiency.

In the Battle of the Somme, the death fire network composed of hundreds of Maxims caused more than 60,000 casualties in one day. In the First World War, it can be said that an entire generation of Europeans at that time was killed.

This terrifying killing machine uses the recoil generated by bullet shooting to achieve automatic shooting. Compared with the Namo Gatling Bodhisattva invented by federal doctors to reduce the casualties of soldiers participating in the war, it is much more efficient. And maintenance is also simpler and more convenient, so it replaced Gatling soon after it came out.

However, because of its high rate of fire of 600 rounds per minute, Maxim will generate a lot of heat when shooting, and within a few minutes the barrel will become red due to shooting.

Therefore, there will be a huge circular sleeve on the barrel of Maxim's gun. When in use, cooling water is injected into the sleeve to cool the barrel. As long as there is water in the sleeve, the temperature of the barrel will not exceed one temperature. Baidu, you can continue to shoot.

Some people may think that this weapon will have a huge advantage in cold weather. After all, if the environment is cold enough, the cooling effect must be very good.

But in fact, there are many inconveniences when Maxim is used in cold areas.

Because Max used a water injection pipe to add cooling water, dripping water into ice in cold areas, the cooling water must burn the ice and snow into water before adding it to the barrel, and this often causes the cooling water to freeze, affecting the use.

Therefore, in cold areas, antifreeze must be added to the cooling water, and the widely used antifreeze at that time was alcohol.

This is why there is a joke about Lucian people drinking antifreeze, because the cooling water with alcohol added as antifreeze was really a delicious drink for the Lucian soldiers who were called gray animals at that time , nothing to suck two, who cares whether the gun can be shot or not?

Later, in order to solve this problem, the Sovia people learned from the Finns to improve the water injection port on the gun body sleeve and turned it into a large flip cover, which can be directly filled with ice and snow, which effectively solved this problem.

Of course, for Chen Xin, he would not use such a troublesome method to cool down the barrel. After all, he is only one person, even if Qin Lan and Ding Ning are here, there are only three people. To install defensive weapons at the door, it is best to design it as fully automatic. Yes, it is best to be able to remotely control it in the Vault.

As for the problem of cooling, it may be a difficult problem to solve for the people of Mark Qin's era, but for modern military industry, changing to recyclable coolant and recycling can also solve this problem.

It's just that for the army, the air-cooled machine gun has already been replaced, and there is no need to die on the water-cooled machine gun.

For Chen Xin, he doesn't need to worry too much about the coolant. As long as the rate of fire is kept low and it is not used for a long time, the Maxim made by modern technology does not have much demand for cooling and heat dissipation. After all, the manufacturing process and The materials used have been completely different.

The last part was mounted on the gun body, and gun oil was added to lubricate the gun body parts, and a Maxim without a support frame was completed.

Looking at this iron guy like a round roller, Chen Xin reached out and patted it, trying to hug it with both hands.

Although it is a bit heavy, it is still within the range that Chen Xin can hold, but this is still a weapon that needs a support frame as a fixed weapon. It is completely impossible to hold up and shoot like a light machine gun in a film and television series.

So if Chen Xin wants to use this machine gun, he also needs to make a bracket for it.

However, when Chen Xin was about to make the bracket, he suddenly remembered a picture he had seen before. After thinking about it, he decided to make another one.

Because only steel is needed to make Maxim, the second Maxim also appeared on the workbench soon.

Seeing two identical Mark Qin heavy machine guns placed on his workbench, Chen Xin nodded with satisfaction and began to make the support frame.

Compared with the Maxim machine gun itself, its bracket is actually more complicated in structure, because in addition to being a support, Maxim's bracket has many different functions.

Some have added shields, which can resist the sputtering of stray bullets and fragments; some are equipped with seats, which can sit on the bracket and shoot; some simply integrate the spare barrel on the bracket, which can be disassembled and replaced when necessary. ...

What Chen Xin has done is a parallel bracket that can mount two Mark Qins together, turning the original one Mark Qin into a double mount.

Because the original bracket structure is used as a reference, it is not difficult to make a double-mounted bracket. Chen Xin just took a little time to make a bracket that can install both Maxims.

Although the structure is a bit irrational and a bit rudimentary, and it is almost impossible to adjust the field of view and angle, it is still a complete bracket.

After installing the two Marks, their names on the system interface changed from Marks water-cooled machine guns to double-mounted Marks water-cooled machine guns, and Chen Xin clicked the upgrade.

It was still the familiar green light, the 100-point survival point and the consumption of a part of the steel made the originally rough and simple double-pack Mark Qin instantly changed after the green light swept through.

The original white and miserable metal appearance has turned black, and part of the structure has been replaced by engineering plastics. The diameter of the thick water-cooled sleeve has become thinner, but the length has been elongated, with a longer sleeve and a longer barrel. , while improving the heat dissipation performance, it also enhances the power of the bullets fired from the barrel.

The simple bracket has also been upgraded, from the original three support feet to a complete support structure, and the movable connection structure that Chen Xin did not do before has also been added. After removing the fixation, the gun body can be within a certain range. Turn to achieve multi-angle shooting.

The part of the trigger has also been modified, from two triggers for two guns to one trigger for two guns, which reduces the complexity of the operation while merging the structure.

As for the loading port, it has also been adjusted from the same side to one side, and according to Chen Xin's vision, a large-capacity magazine has been added to the loading port.

This kind of large-capacity magazine still uses the ammo chain, or simply put, the magazine is just an ammunition box for loading bullets, but due to the system upgrade, there is an additional ammunition feeding mechanism on this magazine, as long as When mounted on a machine gun, the bullet can be fed directly into the loading port.

After completing the production of the machine gun, as long as this double-mounted Mark Qin is installed at the gate of the shelter, Chen Xin believes that without heavy vehicles or heavy weapons, no one can forcefully break in.

However, one machine gun has the limitation of the shooting angle. After thinking about it, Chen Xin decided that it is more appropriate to install two.

So he made another Maxim machine gun with the same double mount, and then he was ready to install them on the gate of his shelter.

Two machine guns were installed by Chen Xin on the left and right sides of the gate, because there was an upside-down terrain outside the gate of the refuge. Although the surrounding snow was piled up, the terrain was still flat, and he wanted to enter Chen Xin's refuge. You must stand in front of the gate, that is, within the range covered by the firepower of the two twin-mounted Maxim.

Within this range, if there is not enough protection, no matter how many people will only be beaten into a sieve.

In addition, Chen Xin installed the two machine guns in the wall, and only opened a small firing port. Even if he wanted to destroy these two machine guns, he wanted to destroy them without heavy firepower. Even using human lives can only consume Chen Xin's bullets in vain.

The large-capacity magazine has a capacity of 200 rounds of ammunition, and two double-mounted magazines are 800 rounds of ammunition.

Even for strafing, 200 rounds of bullets from a single machine gun is enough to sweep for about a minute. If it is a short burst, if you want to use up these bullets, I am afraid that it will not take hundreds of lives to pile up.

Especially after Chen Xin installed the machine gun, he smashed the gate with a thousand survival points and upgraded a lot of materials. While strengthening the strength of the gate, changing the manual push-pull type door to an electro-hydraulic lift-type door, it also improved the strength of the door. Two machine guns added automatic aiming function, and an infrared night vision monitor and dynamic induction were installed on the gate.

The infrared night vision monitor and motion sensing are directly connected to the computer in Chen Xin's bedroom, and are also connected to two machine guns, so Chen Xin can operate them in the bedroom.

As long as a suspicious person appears and triggers the dynamic sensing, Chen Xin will be woken up by the alarm bell in the bedroom, and he can see the situation outside the door through the computer screen.

If someone is plotting something wrong...the four tongues of flame that cross over cover, even on the battlefield is a nightmare.

Based on everyone's opinions, today's two updates are 3K, but the update is enough. I originally planned to finish it as much as possible within this month, but now I can only see if the update can be completed next month.