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Of course, it is not that Jiuwu is really that garbage. Compared with the foundation that China has, it is also good, but the design did not consider ergonomic engineering, which caused many defects.

This is a firearm specially designed for Chinese motorized infantry.

At present, the 77-1 foldable automatic rifle is generally used in China, but it is just the folding of the buttstock. It has not improved much for the overall length of the gun. It only makes it easier for armored soldiers to use it, and will not cause various inconveniences to soldiers inside the armored vehicles because of the long gun.

Fortunately, Liu Yijiu didn't wait long, and Luo Tong came to him to find him.

The expression on the boy's face shows that he has been doing well these days.

"Have you figured it out?" Liu Yijiu looked at Luo Tong who was a little restrained and asked to him.

Li Rui finished making the tea, then greeted him, and took the two children out to play, leaving enough space for the two brothers.

"Xiao Jiuer, I'm sorry!" Luo Tong did not call Director Liu again, but called Liu Yijiu's nickname. At the beginning, they all called him that.

Now there is no one with the name Liu Yijiu except for some old men at the base.

"Okay, just figure it out. Those who work in technology cannot let the family be burdened. We brothers, only we can meet often. You know, I have a special status and I don't have a few real friends..." Liu Yijiu revealed the truth. Even though he and Li Rui were respectful, they still felt a little unfamiliar.

Without too much politeness and greeting, Luo Tong got into the topic, "What kind of difficulties do you face in the design of small-caliber rifles? There has been no breakthrough in so many years. Let me tell you first, I will call Chen Dashan here and let's discuss it together."

Liu Yijiu called Chen Dashan first, and then asked Luo Tong to drink tea while learning about the situation.

"The small-caliber rifle design itself is not a big problem. It has the foundation you left behind, but when designing, especially when we conduct various gun tests, there are many problems..."

Luo Tong was almost as focused as Liu Yijiu when he became involved.

When talking about this issue, I talked endlessly, "First of all, we are designing the issue. So far, many solutions have been modified, but I am still not very satisfied, especially some details. Ergonomic engineering issues are also a brand new topic..."

"In terms of ergonomic engineering, guns cannot be avoided in the future. When designing, you must consider the 77 series. It can be said that it was used for emergency response back then, and there were not too many considerations in the design. Please show me the design plan, what is going on..." Liu Yijiu actually has no experience in gun design.

But he knew a lot of classic gun designs.

Therefore, there is no problem to make some improvement suggestions.

"95?" When he saw Luo Tong's design plan, he exclaimed immediately.

"What 95?" Luo Tong couldn't help but wonder.

He has been working on this plan for many years and has been revising it all the time.

"No. Have you ever thought about this design? Although the design was designed with a small grip and it was combined with the trigger guard, how should a soldier hold a gun at such a distance?" Liu Yijiu sighed.

Could it be that Luo Tong is the designer of the original Type 95 rifle?

This is impossible.

Now that Luo Tong has come up with such a plan, what kind of thing is designed by the people from the Firearms Research Institute?

"Indeed, the entire layout is too compact. I also thought about the layout design according to the traditional way, but it would take longer for soldiers to change magazines. This gun was originally an assault rifle used by special operations troops..." Luo Tong looked sad.

Ergonomic engineering is something that must be considered in future gun design.

This is the reason why many soldiers despise them and would rather use 81 bars.

"At the same time, in this design, the shooter's cheek is too close to the smoke source when shooting, and the gunpowder gas does not burn completely overflows from the shell window, the puller handle slot and the upper cover heat sink, which directly stimulates the shooter's eyes or spreads on the aiming baseline, which can affect the shooter's continuous aiming and shooting. This situation also causes inconvenience to the use of weapons. It does not meet the needs of special operations..."

In foreign assault equipment, there are not many firearms that use this design.

The M4, MK18 and other used by the US military are not designed like this, mainly considering ergonomic engineering. There is also the impact of soldiers' weapons and equipment performance on their combat effectiveness during combat.

95 doesn’t work, the biggest problem is these aspects.

At the same time, there are also material problems and the problem that parts are prone to falling off during disassembly and maintenance. Even after the engineering plastic becomes black, it will be worn white after being used for too long, which are all problems.

Even if the use of national troops is not considered, but only for special combat troops, such a design is not possible.

Chen Dashan obviously attaches great importance to the improvement of guns. After all, he hopes that his special forces can have stronger combat power.

There is no longer much potential to be discovered from soldiers.

To improve combat capabilities, we can only consider weapons and equipment.

"How to say it? Can there be any improvement?" Chen Dashan asked this as soon as he came.

"What are you anxious about? You weren't that anxious when you were using it before?" Liu Yijiu gave Chen Dashan a blank look, "You came here to ask you to give suggestions and tell you the problems you encountered. Although the test has not been completed, the sample gun has also been used by the army. Your suggestions can enable us to design better guns."

Chen Dashan nodded, "I have told you the problem I encountered before..."

"Then I might as well not ask you to come..." Liu Yijiu was speechless, "You guys who use firearms must have ideas, right?"

"There is this. The person in charge of logistics has collected the requirements put forward by the soldiers. The main thing is to strengthen the distance between the front grips, otherwise the hands cannot move forward, and the smoke source behind must be further away from the cheeks. Otherwise, during the battle, our soldiers had just fired a few shots and would have to be killed by the enemy..." Chen Dashan immediately took out several thick pages of printing paper from his pocket.

All of these are requirements for improvement.

While handing it to Liu Yijiu, he said, "I knew you would need these, so I asked them to investigate clearly in the past few days and then organize them together."

When Luo Tong saw this, his mouth twitched, "Old Chen, you are not kind enough. You didn't give me these before!"

Chen Dashan directly despised Luo Tong, "These things were given to you before, but you didn't have much thought. There were not many people in your gunshop. How much have you improved by yourself?"

If it was somewhere else, Chen Dashan would consider that he was Liu Yijiu's brother and would not raise this question.

Hearing this, Luo Tong's face turned red.

Liu Yijiu didn't say much, but said directly, "We will improve on this plan. If we need to change all these, then first, the position of the front grip must be modified in the front. At the same time, to keep the soldiers' cheeks away from the smoke source and not affect the combat, then the current unsupported structure design must be changed..."

While speaking, he kept modifying the design drawings provided by Luotong.

Luo Tong frowned while watching, but he didn't react at all, just frowned.

Even Chen Dashan couldn't stand it anymore, "I said, if you continue like this, how long will this gun be? We might as well use 77-2. Although there are many problems with guns, they won't be too long..."

"How much does the gun weigh in this design?" Liu Yijiu asked Chen Dashan.

Although the previous Type 77 was also designed from Type 81, for higher accuracy, Liu Yijiu modified a lot, making the weight of the gun reach nearly 4 kilograms. With the gun-mounted grenade launcher, it is more suitable for heavy or not.

"About 3.5 kilograms." Luo Tong said.

"Didn't you use engineering plastic? It's still so heavy?" Liu Yijiu frowned.

The M4 used by the US military only weighs only 2.68 kilograms, and the weight is only 3.13 kilograms. Under the same weight, the US soldiers even carry 60 more rounds of bullets than Chinese soldiers!

"The weight of the gun, especially the empty weight, should be reduced to about 2.5 kilograms. The overall length of the gun should not exceed 800 mm, or even 750 mm. We cannot just consider shortening the length of the gun, but also consider the power of the gun. In this case, we need to increase the kinetic energy of the muzzle and make the bullets come out faster. At the same time, we must have a faster shooting speed..." Liu Yijiu said to Luo Tong.

Luo Tong saw Liu Yijiu's modified plan, and then began to quickly figure out how to combine this change into his own shooting.

"Of course, at this time, we can refer to foreign designs." After Liu Yijiu finished speaking, he did not say anything else. He threw the requirements listed by Chen Dashan to Luo Tong and asked him to modify them according to the subsequent situation.

At present, they only need to complete the overall design first.

Chen Dashan was also happy to be idle. He robbed Liu Yijiu's family and then slipped away after robbing a lot of good cigarettes and alcohol. He didn't even eat food.

After Liu Yijiu made some suggestions, Luo Tong returned to the design room with the drawings.

Liu Yijiu, who was idle, ran around the Jiuyuan Base, and put forward some suggestions for each project, and was waiting for Ye Xuan to come back.

Due to the obstruction of the US government, it is not easy for many students studying in the United States to return to China.
Chapter completed!