The difficulty in manufacturing a gun is the barrel and the bolt, which are done in these two places, and other messy things such as crosshairs, ammunition feeding devices, etc., can be made at will.

On Earth, the barrel can only be manufactured by a series of high-intensity and complex processes such as drilling, polishing, rifling, and bore treatment with precision machine tools, but in the continent of Imis, there is no such powerful machine, so what should I do?

In fact, the solution is very simple and magical.

In the high-level real room, Karel found that every qiē here can be changed according to his own preferences, and he can even make a space door out of thin air, since this is the case, it is simple.

First of all, Karel first generated a gear-shaped space door with an inner ring diameter of 30 mm and a gear external tooth length of 0.1 mm, fixed in mid-air, with the exit of the space door parallel to one side.

Then take out a metal rod in the space backpack, make the center of its section and the center of the space door on the same level, and then make the metal rod float in the air and slowly select, and then, the metal rod in the control zhì selection crashes into the small gear-shaped space door.

When the metal rod touched the space door, an object that looked like a long gear rod floated out of the exit of the space door, and when the metal rod completely passed through the space door, a strange object 2 meters long like a twisted gear rod also appeared on the other side.

Well, now you need to cancel the space door, with the cancellation of the space door, the space shear force is generated, and the object cut by the space door is suddenly separated from the metal rod.

Holding the metal rod that had been processed by the space door, the round hole at one end of the Carreltong guò looked carefully, and sure enough, the inner wall was very smooth and rough, and the rifling was even and fine, so that a barrel was done!

Of course, although this processing method is convenient, it still needs to be inspected.

With a wave of his hand, Karel made a rectangular spatial door again, and then inserted the finished barrel from the side, and with the spatial ability, this barrel was neatly separated from the space, at this time, Karel took some measuring tools and began to calibrate.

Obviously, using space to process materials is a thousand times better than traditional tools such as knives.

The metal tube was withdrawn from the side, and the barrel, which had been split in half, was restored to its original state after penetrating back into the space door. This time, you can't directly cancel the space door, otherwise the barrel that was made just now will be scrapped directly.

"Yo, great inventor, how's the weapon doing?" At the dinner table, Lulin joked with a prawn dangling in front of Carrel's eyes.

"Ahh Karel took a bite off the tail of the prawn and said as he chewed, "The barrel is almost done, and the bolt is almost done, and you can see how it works when these are done." ”

I didn't expect that the processing of the space door in the real yàn room would consume mental power, one or two can't see it, and it is really unbearable to do 7 in a row, so Karel tossed for most of the night, and made 5 qualified ones, and scrapped 6 ones, fortunately, Hercules directly wrapped the round material, and Karel asked for 20 metal rods in one go, otherwise there would be no materials to do now.

"Huh? I said, how did your ears change color? As a daily routine, Karel, who was pinching Lulin's ears, suddenly noticed that something was wrong with the original reddish-brown fur, which began to turn white from the tip.

, what's the matter, what to see, if you have a grandmother who also likes to pinch her ears.

"Discoloration? Have it? The little fox shook his ears, and the white fur on it became more conspicuous.

"See for yourself, it's turned white." Karel pulled out a metal plate and relied on its shiny surface as a mirror.

"Go, go, I have a mirror." Patting aside the metal plate that Karel had handed her, Lulin pulled out a delicate little mirror and looked at it.

Carefully flipped over the white hairs growing on her ears, and then Lu Lin stood up slightly, pulled her tail to the front, and began to stroke it backwards, and sure enough, the long brownish-red hairs were covered with dense white short hairs.

"Uh, this is ......" Looking at the white hair on her tail, Lu Lin was also a little confused, "I... I don't know, I think I need to get in touch with home. ”

Lu Lin's so-called home is the fox tribe that adopted Lu Lin in the first place.

Well, regardless of the change in coat color, the little fox is nothing more than a seasonal moult, nothing strange.

After a short break, Karel returned to the real yàn room again, and the students who applied for the real yàn room to make inventions can postpone the course appropriately, so it doesn't matter if you don't go to class for a day or two.

7 barrels, tossed twice, finally all to the zuò, the following is the complex bolt parts.

What Karel wants to make is a device called a rotating locking movement, and there is no way, after all, who wants to make something that is particularly exaggerated.

The rotary locking machine core is a follow-up cam and a locking/unlocking roller are installed at the tail of the machine core body, the machine core assembly moves forward to the lock area, the cam acts on the roller, the roller rotates in turn, and the machine core head enters the locking position. The movement assembly is equipped with a firing pin, a firing pin spring, and a plate spring, which is controlled by a firing cam on a fixed casing. As the movement component moves forward and rotates into the firing position, the leaf springs are compressed and then released.

At the same time, a rotor reversal device was also required, which could be controlled by a practical hydraulic transmission to ensure that the first shell was in the corresponding position on the intake. After the trigger is released, in a single firing cycle, the unfired shells in the cannon can return to the inlet in 1 second through the guò rotor reversal movement, ready for the next fire.

In other words, although this thing looks like a headache, but when it is actually made, you will find that it turns out to be a headache.

It took more than half a month, and the complex bolt structure was finally completed, and when the production was completed, Karel casually took some wood and carved some bullet models, and then used the half-disassembled bolt to simulate the shooting observation. The result is gratifying, the work of half a month has not been in vain, a bullet can completely turn in the bolt, and then throw it out after the impact of the firing pin.

Since there is no problem with the bolt, then the transmission device and hydraulic device are installed, the transmission device is the so-called small motor, the motor used to play the mini four-wheel drive car is that kind of motor, the principle is nothing more than that the current-carrying conductor is rotated by the force in the magnetic field, the material is not complicated, and it is done quickly, as for the energy, the energy converter is directly used to convert the energy spar of an electric system into a stable output of current, and then through the guò gear set, you can make the small motor obtain a high torque.

I made two small motors, one on each side, because the material of the barrel is heavier, so a small motor does not rotate fast, and it takes two to be strong!

Now that the small motor and hydraulics are installed, all that is done now is to assemble the barrel and bolt, and then match the ammunition pack for live ammunition detection.

The materials are all ready-made, so it doesn't take much time to assemble these things, and soon, a majestic super-large cannon appeared in front of Karel, 7 thick barrels, with a total length of more than 2 meters and a total weight of almost a ton, this is the otherworldly version of the GAU-8, 30 mm caliber cannon, codenamed Avenger!

Looking at the metal monster in front of him, Karel's heart was full of pride, compared to those who played front-loading muskets and earthen cannon grenades after crossing over, this is a symbol of men!

Now that the cannon has been assembled, it's time to make the ammunition.

The 30mm caliber cannon, its bullet is almost the thickness of an arm, fortunately, this world also has its own gun culture, primer, propellant, cartridge case for this continent of Imis, is not a strange thing, of course, the 30mm big guy is another matter.

The warhead is a copper-clad steel core bullet, and the shell is made of brass, and its size is 30X156 mm, because the cannon made by Karel is not the original version (the original version is more than 6 meters long), and the length is much shorter, so the charge and size are reduced accordingly.

A total of 400 bullets were made, each of which was handmade, and it took Karel 4 days, and during these 4 days, Karel looked at the sun in pairs.

So, the ammunition is almost done, and now there is only one problem left, the Avenger cannon is a multi-barrel cannon, and the firing speed is simply scary, this is only 400 bullets, and all of them are exhausted in 3 seconds of firing at full speed, and besides, there are 400 bullets, and their weight is almost half a ton, so how can we solve the problem of bullet supply, and the continent of Imis is not like the earth, with a complete industrial system.

This question bothered Karel for several days, until one time Liara showed Karel her newly purchased bow and quiver.

"Look, this quiver can shoot infinitely, how about it, isn't it?" Liara held a long quiver filled with arrows and a dense array of runes on the outside.

"Infinite Shots?" Hearing this word, Karel suddenly realized that since this is not the earth, then it is better to transform it according to some unscientific methods.

Time feedback rune, this is the answer that Karel learned from Liara, time feedback rune is a very, very peculiar thing, under the influence of this rune, the time can be changed in a small range, 2 seconds a return, 2 seconds a return, all the ammunition fired out is returned, as long as the energy supply of the rune is guaranteed, then the ammunition is unlimited.

To this end, Karel made an engineering ammunition box, which was specially used to store ammunition, and added time to give back to the rune group outside, and at the same time connected a wire from the energy converter, then, it can ensure that the transfer tube does not stop, the ammunition is endless, and if the transfer tube stops, then there will be no bullets.

At this point, it took nearly a month to finally get this weapon done, and the next thing is to see the actual test.