Chapter 324: Seven Steps Away, the Gun is Fast
This is the main purpose of this trip. The bayonet is an unexpected gain and not something very important.

Wow, that’s quite fast. Gao Zhendong quickly took it.

After opening it and taking a closer look, I realized why it was so fast. Simply put, this is not a complete design result of the squad weapon, but something like a rough design or preliminary design in the first phase.

It does not involve things like the internal structure of the firearm, mechanical connections, or specific automatic processes, but rather focuses on indicators, requirements, and technical routes.

For example, as for the automatic principle, it is only designed to use a short-stroke piston gas-operated automatic with a gas regulator; as for the locking method, it is only designed to use a bolt rotary locking method, and so on, and the rest are basically the same.

As for how short the piston stroke is and how the bolt is locked, not much is involved.

The entire design is still in the middle stage from top to bottom and from rough to fine.

As for the bayonet seen earlier, it is an exception. After all, that thing is really simple, and the steel is also available, so it may have been drawn casually.

Gao Zhendong took a careful look. Since he hadn't entered into the specific design yet, he didn't need to look at many details. However, when it came to the specific design and mechanical things, Gao Zhendong was not as clear about it as those who had received professional training.

So what he is best at is probably at this stage.

Looking at the concept drawings of the firearms, since they are designed as a family of guns, many problems of assault rifles and light machine guns are common.

Gao Zhendong pointed at the concept map and explained his ideas bit by bit.

The problem that can be seen at a glance is that the assault rifle seems to be missing something.

There is a folding buttstock, but the place where the buttstock is connected is the same as the previous "integrated rifle and assault rifle". The handguard has a downward curve from the rear end of the receiver, and the folding buttstock is connected to it.

It looks like there should be a steel structure inside and a wooden guard wrapped around the outside, otherwise the strength would not be enough.

Figuratively speaking, it is like there is half a small grip at the tail of the gun, and the straight butt is connected to this half of the small grip.

Looking at this design, Gao Zhendong's face twitched a little.

It seems that he still hasn't gotten out of the rut of "integrating rifle and assault rifle into one". Gao Zhendong smiled and pointed at the place behind the trigger guard.

"Here, I suggest adding a small grip, so that it will be much more comfortable to hold the gun when shooting, which will help improve shooting stability."

Several students listened and whispered to each other.

"I told you to just add a small grip, just like the previous generation, but you refused."

"This small grip is good for bayonet fighting. Besides, with this grip, you can still pull the trigger and fire the gun while bayoneting. Isn't that killing two birds with one stone?"

Everyone was discussing in a low voice, but Professor Liu understood a little bit that the man in front of him was much more interested in firing bullets than fighting with bayonets. Even though he liked to play with bayonets, when it came to real use, he would rather use bullets.

He summarized everyone's thoughts: "It's like this, Director Gao, this design is mainly based on the needs of bayonet fighting, so..."

Gao Zhendong did not say that he would not fight with bayonets: "You can try it out. If the straight stock is properly designed, the grip will feel good and will not affect the bayonet fight. When fighting with a bayonet, you can use the base of your thumb to support the raised part of the rear of the receiver. Then, make some plastic wrapping on the straight rod of the folding stock with the right thickness and convex grip patterns. The effect will not be bad."

It was difficult for Gao Zhendong. In order to reverse this awkward design, he even brought out things that were not on the "transitional to regular" gun in his previous life.

On that gun, the butt portion has no gripping ridges other than the longitudinal reinforcement grooves.

Looking at the schematic diagram drawn by Gao Zhendong on another piece of paper, Professor Liu thought for a while, and even used his hands to virtually grasp and gesture a few times, then nodded: "Well, Director Gao's suggestion seems to be feasible, let's go back and try it."

Gao Zhendong added: "And in this way, the connection point of the buttstock is moved up and is basically on the same axis as the barrel, which is very helpful in suppressing the upward jump during the recoil process."

He knows what everyone is most unhappy about the previous generation, isn't it? It's the jump. Come, I'll use this advantage to add more dirt on the grave of this design.

Everyone nodded slowly as he described. Director Gao's words did make sense.

"Director Gao, what are the benefits of being able to shoot at any time? Is it something that can be discarded in this design?" The student had no intention of arguing at all. He just wanted to learn more and asked questions when he had them. How to make choices is also something he needs to learn.

Gao Zhendong laughed loudly: "Classmate, believe me, as long as there are bullets, we generally won't think of fighting with bayonets. Moreover, even with a small grip, it is still not difficult to shoot quickly. Our soldiers can make up for this with training."

Well, if you want to talk about bayonet fighting, then I will use hard training to deflect the topic. These two are irrefutable slides.

In fact, hand-to-hand combat was often used in the past, mostly because of the lack of ammunition. During the Anti-Japanese War, a soldier only had a few bullets and grenades in a battle. The few grenades might explode in two, so they could only be used as a border area to create an atmosphere. There is a very old comic book called "Seizing the Gun in Qinghe", which gives a relatively detailed description of the hardships at that time.

Therefore, the subsequent explosion in production capacity of bullets and grenades may have been due to the retaliatory consumption mentality caused by the fear of being poor.

Gao Zhendong explained the reason: "We may put the enemy at a distance of 10 meters or even 5 meters, but even at this distance, as long as there are bullets, the first choice is still not hand-to-hand combat. Students, remember this when designing firearms."

Having said this, he paused, then cleared his throat amid everyone's curious eyes.

"From seven steps away, the gun is fast. From seven steps away, the gun is accurate and fast!!"

Professor Liu, who almost laughed out loud at his joke, wrote down this sentence. He didn't expect that Director Gao, who had the nickname "Cannon", was so interesting.

Amid the laughter of everyone, Gao Zhendong also smiled and pointed at the blueprint: "What shape of parts are you going to use in this place?"

The place he pointed to was the piston's backward movement range.

Here on the AK-47, there is a round tube, and the piston moves back and forth in this round tube.

Professor Liu took a closer look and replied, "Initially, we are considering round tubes."

We haven't entered into comprehensive detailed design yet, and the initial consideration here is to make it consistent with the AK-47 and its imitation models.

Gao Zhendong shook his head: "Replace it with a curved cover to block the mud and sand from getting in."

A classmate asked: "Director Gao, we saw that the previous generation was round tube, all fully automatic, and that worked very well."

Gao Zhendong almost laughed out loud. You mean the fully automatic one uses the round barrel of the AK-47, and the semi-automatic one uses the curved cover of the SKS, right?

He gestured a few times on the concept map with a pen: "Think about it carefully?"

It is also a good thing to let them use their brains. When Professor Liu heard Gao Zhendong say to change the curved cover, he began to think and laughed at this time: "Director Gao is smart, use the curved cover!"

Seeing that the students were all looking at him, he waved his hand and said, "Think about it yourself. Today, I will be Director Gao and I teaching you. Haha."

The students are not fools. How can any of them be foolish if they can be brought here by Professor Liu?
Soon, they started discussing the matter.

"I understand. We don't need to use round tubes here! It can save materials. The original AK-47's long-stroke piston has a center of gravity too far forward and has a tendency to bow. It is not enough to rely on the bolt carrier to restrain it. There must be a fully enveloping round tube to restrain its front end so that it can run freely according to the designed motion trajectory. However, the center of gravity of the short piston is far back, so this constraint is not needed at all. It is enough to use the bolt carrier to restrain the back half of the piston!"

One of the students quickly understood what was going on.

With his example, other students also expressed their opinions.

"Yes, yes, yes, you are right. And the benefits are not limited to this. In this way, the distance between the piston and the arc cover is increased, and the tolerance to debris is also much better.

"Well, this part is easier to handle when the soldiers clean their guns. The tube is definitely not as easy to clean as the curved cover."

Professor Liu was also very happy to see everyone speaking enthusiastically: "What else? There is another biggest benefit that you haven't mentioned yet."

After saying that, he also gestured a few times on the concept map like Gao Zhendong, and his movements were roughly the same.

After watching the same action again, a classmate suddenly realized: "Center of gravity, it's still the center of gravity! Without the lower part of the round tube, the piston can be designed to be lower and the center of gravity closer to the axis of the barrel. In this way, the impact of the movement of the piston on the stability of the gun is minimized! What Director Gao wants to grasp is still the accuracy of the gun!"

Professor Liu laughed out loud, this was finally enlightenment.

"That's right. What Director Gao has always wanted to do is to improve the accuracy of the firearm within the shooting range without reducing other performance! Adding a small grip is for this purpose, moving the buttstock connection point up is also for this purpose, and changing the piston shielding constraint method is also for this purpose. However, while achieving this main goal, he did not forget to take into account some other benefits! This kind of comprehensive consideration and multi-faceted thinking and ability is what you should learn more about."

Gao Zhendong was confused. Actually, I’m not as good as you said. I was just copying what I saw in my previous life.

No matter what he thought in his heart, the students believed what Professor Liu said. It doesn’t matter what you think, that’s what you show.

Seeing that they believed in him so much, Gao Zhendong was not polite. In that case, I would like to ask you to solve this little regret about the gun in my previous life.

You're welcome, this is what I should do.

(End of this chapter)