Am I the murderer?" Gao Xiaozhe looked at Gu Chen, and his heart suddenly fluctuated.

"Officer Gu, I'm a maintenance worker, I don't know this deceased at all, you say I'm a murderer, then you have to tell the evidence, right?"

Maybe it was because Gu Chen was angry, Gao Xiaozhe reacted a little excitedly.

Before this, he had been forbearant and careful everywhere, for fear that he would not be able to leave.

But now Gu Chen put the murderer's hat on his head.

It seems that the mood that had been suppressed for a long time broke out at this moment.

At this time, all the detained people on the stage looked at each other and looked at the two of them for unknown reasons.

In everyone's opinion, Gu Chen was a thunderstorm, silently, and suddenly recognized the murderer's finger.

Although it is a bit rushed, some are surprising.

However, when the murder weapon was not found, he dared to identify who the murderer was, and said that the young policeman was too impulsive.

Lu Weiwei asked Gu Chen with some caution: "Senior Brother Gu, you said that he is a murderer, what about the evidence? This has to talk about evidence, we haven't found the pistol yet." ”

"Firing bullets does not necessarily require firearms, and the 107 rocket launcher, one of the three major artifacts of guerrilla warfare, can also be fired without a barrel. ”

Gu Chen introduced as he took the toolkit in Gao Xiaozhe's hand again and put it on the table.

This time, Gu Chen once again took out the tools inside in turn.

Zhao Guozhi hesitated a little, walked over and asked Gu Chen: "Gu Chen, you said that bullets can be fired without firearms?"

"Yes. Gu Chen replied while placing the tools: "It is strictly forbidden for private individuals to own firearms in our country, and even if you can apply for a gun license, the standard is very strict. ”

"So I think it's very unlikely that a murderer killed someone with a firearm, otherwise why would so many of us dig three feet into the bar and can't find a firearm?"

Zhao Guozhi was a little embarrassed by the question, and quickly explained: "Maybe it's because the murderer is hiding in a hidden corner somewhere, or dismantling the firearm." ”

"But even if it is disassembled, we can still determine the type of weapon by finding the parts of the firearm. Gu Chen still replied.

Officer Wang frowned and asked Gu Chen, "Gu Chen, what are your thoughts now?"

"It's simple, I want to make sure I can shoot bullets without a gun. Gu Chen propped his hands on the table, and said with a light smile:

"I've done some interesting experiments, some of which are about firearms, but the people who do these kinds of experiments usually live abroad. ”

"So there's a reason why they're so small?" Ms. Lu said.

Gu Chen said: "They will transform ordinary firearms into more powerful guns, and they will often do some unbelievable events. ”

"But when it comes to firearms, the bullets of firearms are naturally indispensable, because the most powerful thing about firearms is the impact of bullets, and with an extremely powerful starting mechanism, bullets can reach kilometers away. ”

"There are many types of bullets, but their principles are the same, they all rely on mechanical energy and other stimuli to ignite the propellant and launch the bullet. ”

"Comrade policeman, what do you want to say?" Seeing Gu Chen's explanation of the principle, the bar manager Wang Haifeng was a little confused.

Gu Chen said directly: "What I want to say is that pushing the chamber according to the principle is not the only condition for the bullet to be fired. ”

"As I just said, the 107 rocket launcher, one of the three major guerrilla warfare artifacts, can also be fired without a barrel, and it is launched in multiple forms. ”

Lu Weiwei seemed to understand something, so Gu Chen: "So, is it outside the chamber of the gun, and the bullet can be fired if the conditions for firing the bullet are met?"

Gu Chen nodded slightly: "You may not believe it, the answer is yes." ”

"Okay?" Officer Wang was stunned, and said with a light smile: "This is the first time I've heard of this being able to fire bullets without a gun." ”

"Therefore, very few people in our country will try this kind of experiment, and only some people abroad will do it. ”

"But it's really because of this kind of experiment that it reminds me of why we couldn't find a firearm after the deceased Brother Hao was shot and died. ”

Seeing Gu Chen looking at him, the maintenance brother Gao Xiaozhe frowned: "But what does this have to do with me, I won't do this kind of experiment." ”

"Yes, Senior Brother Gu, could it be that we made a mistake?" Yuan Shasha also heard for the first time that bullets could be fired without firearms, and she was curious for a while.

Gu Chen nodded slightly and said, "Without a barrel and other structures, the bullet will fly around without direction, and it may even hurt itself, because this kind of bullet is full of too many uncertainties, which is also a rather dangerous behavior." ”

"But this is only an objective factor, I am going to talk about the absolute factor, that is, when a bullet is hit with a sharp object, the temperature is up to 3000 degrees Celsius, and the high pressure generated can propel the warhead. ”

"But its power and damage will certainly not be as great as if it were fired from a gun, so if you want to hurt someone, it must be at close range, which can also explain why the deceased died in the bathroom, because the space is so large, once it hits the door of the head, it will definitely die." ”

Hearing Gu Chen's words, Zhao Guozhi nodded slightly and raised his own question: "But the combustible temperature of the primer of the bullet is not as simple as imagined, it can only be said that the bullet will be launched when it reaches certain conditions." ”

"But it's better to use a firearm to fire a bullet, and it's illegal to try such a dangerous experiment, let alone use a bullet to do an experiment in which the bullet is not fired inside the gun. ”

"Zhao Ju, what you said is very right. Gu Chen also agreed with Zhao Guozhi's opinion very much, but still put forward his own opinion: "In fact, you can launch it by deliberately tapping the bottom of the bullet." ”

"In the past wars, there were often cases of ammunition left on the battlefield that were accidentally touched and detonated. ”

"Therefore, when the bullet reaches a certain condition, it is possible to fire the bullet without placing it in the chamber if it satisfies its firing principle. ”

Bar manager Wang Haifeng was stunned when he heard this.

Although Gu Chen said it very clearly, Wang Haifeng still didn't know anything about the principle, so he asked Gu Chen again: "But Officer Gu, according to what you said, how did Brother Hao's death happen?"

"Have you ever watched a war-themed TV series?" Gu Chen asked him.

Wang Haifeng nodded: "Of course." ”

"In the TV series, are the bullets fired through the firearm, and are the bullets in the pistol usually placed in the chamber?"

"Right...... yes, after watching those moves, I feel like I'm going to use a gun. Wang Haifeng also said truthfully.

"That's right. Gu Chen looked around, and his hands gestured with everyone: "The action before shooting is to load." ”

"If the bullet can be held in place and hit the bottom of the bullet with another sharp or hard object, there is a real possibility that the detonation of the mercury at the bottom of the bullet will occur, resulting in the launch of the warhead. ”

After a pause, Gu Chen said again: "Of course, this is an extremely dangerous behavior, not to mention the launch of the warhead, it can completely harm people or objects in front of you." ”

"When fixing the bullet, the stability of the bullet is certainly not up to the requirements of being placed in the barrel, once the gunpowder in the cartridge case explodes, affected by vibration, the fixed bullet falls off or is misplaced, the bullet is likely to form a larger angle of fan killing, and even hurt the launcher himself. ”

"So in reality, the vast majority of people who do this are people who don't know the situation, and the result is likely to be personal injury. ”

Hearing Gu Chen's words, Officer Wang hurriedly took out his matching gun, unloaded the magazine, and took out a bullet from it and held it in his hand to observe.

"Senior Brother Wang. Gu Chen hooked his hand at him and said, "Borrow your bullet and use it." ”

"Give. Officer Wang handed the bullet to Gu Chen.

"Let's start by looking at the structure of the bullet. Gu Chen sandwiched the bullet between his fingers, looked left and right for a week, and said:

"It usually consists of a warhead, a cartridge case, a propellant, and a primer, and there are also two types of bullet launches, which are bottom-edge firing and bottom-firing. ”

"A small number of bullets are fired on the side, with the entire bottom of the bullet casing as the detonator, the bottom edge is filled with propellant, and the firing pin directly hits the weak part of the bottom edge of the bullet, and the propellant is squeezed and ignited, thus igniting the propellant. ”

Glancing at Zhao Guozhi's direction, Gu Chen just explained: "And this most typical bullet is a 5.6mm small-caliber sporting rifle. ”

"That's right. Zhao Guozhi nodded slightly, confirming Gu Chen's statement.

Wang Haifeng looked at the bullet in Gu Chen's hand, and said curiously: "Then among this small bullet, the warhead should be the most deadly." ”

"That's right. Gu Chen nodded in agreement and explained: "Therefore, whether it is a bullet shell, gunpowder or low firepower, the warhead is squeezed out to make it move at high speed and produce powerful lethality. ”

"But with the rapid development of modern science and technology, bullet firing technology is becoming more and more mature. ”

"At the same time, many different methods of delivery have been developed under the tests of some dead people, so the lethality of warheads has also increased. ”

"And in the process of firing a bullet, the most common method is to use a primer to complete the firing of the bullet. ”

"I see. Lu Weiwei also grinned when she heard Gu Chen's explanation.

At first, she may not understand it, but after Gu Chen's explanation, Lu Weiwei finally understood that what Gu Chen wanted to express was nothing more than the issue of bullet firing.

After all, an ordinary bullet is basically composed of four parts, namely the warhead, the cartridge case, the charge and the primer.

This basic structure, since the second half of the 19th century, has hardly changed, and this is the basic structure of the bullet that everyone is commonly having.

Moreover, during the firing of the bullet, when there is a pull on the trigger, the firing pin will hit the primer part of the bottom of the bullet.

The moment the primer detonates, the charge inside is detonated.

The charge burns and explodes inside the narrow bullet, producing a large amount of gas, which catapults the warhead with great kinetic energy to complete the entire firing action.

Knowing these things, Lu Weiwei finally had a score in her heart, so she said with a light smile: "Let's go back to the question just now, bullets can really be fired in a fixed way." ”

"But it's really, really dangerous, and if a bullet is accidentally dropped, it can cause very serious damage to yourself. ”

"That's right, that's what I'm trying to say. Gu Chen also confirmed Lu Weiwei's statement.

At this moment, everyone refocused their attention on the maintenance brother Gao Xiaozhe and the tools on the table.

"So, what do you mean by Gu Chen...... Can these tools cause bullets to fire?" Zhao Guozhi picked up an electric drill.

Gu Chen nodded slightly, and said indifferently: "It turns out that it's actually very simple. ”

Speaking of this, Gu Chen directly stuffed the bullet into the rubber management, and it was still stuck.

"See?" Gu Chen picked up the rubber tube and showed it to everyone: "First stuff the bullet into the rubber tube, this kind of rubber tube is similar to the one used on the gas tank at home, and then we will use this again." ”

This time, the tool Gu Chen picked up was a vise, clamping the vise to the rubber tube.

"In this way, the caliber of the bullet is made, and the next step is to fire the bullet, which requires an electric drill. ”

"You...... You're saying that you can use a drill to excite the bottom of the bullet and you can fire it?"

Wang Haifeng, the hotel manager, looked at this kind of divine operation, and couldn't help but smack his tongue secretly, feeling a little subversive.

Gu Chen didn't hide it: "Actually, this is a relatively famous launch method, which was used in assassination operations, but now people know relatively little, and I also saw it by chance." ”

The voice fell, and the scene was in an uproar.

All the officers looked at each other.

You may know a lot about your own firearms, but you've never paid attention to firing bullets without a gun.

But this time, Gu Chen opened everyone's eyes and increased everyone's knowledge blind spots.

And the many men and women who were isolated above the stage were also shocked at the moment.

In everyone's opinion, ordinary maintenance tools can be done so much.

If Gu Chen hadn't said this, everyone might never have known it for the rest of their lives.

Gu Chen glanced at Gao Xiaozhe, who was trembling at the moment, and said, "These tools seem to be ordinary, but in fact, you are hiding them deeply. ”

"You should be familiar with these methods of operation, which is why you use the convenience of your work to kill people in this way. ”

Gu Chen said as he pressed step by step.

And Gao Xiaozhe kept retreating, his face full of horror.

"You...... You nonsense, I don't know what you're talking about? I don't know anything about shooting without a gun, it's ...... This is something that you professionals only know, I'm a maintenance worker, I don't know what's going on, you have wronged me. ”

Gao Xiaozhe spoke tremblingly, and some words were incoherent.

But Gu Chen directly picked up the electric drill, pointed to the drill bit and said, "Is it what I said, take this tool to test it." ”

"The electric drill fired a bullet primer, which left a trace, and I wondered why there was a smell of gunpowder on the drill bit. ”

"At first, I thought it might have been left behind when the drill bit drilled into the wall, but if you look closely, you will find that it is completely the smell of gunpowder from the bullets. ”

"You...... Can you smell this?" Gao Xiaozhe didn't know when, the beads of sweat on his forehead unconsciously flowed down.

Gu Chen nodded slightly and said, "It's not that I know, and you left in a hurry just now empty-handed, which made me suspicious." ”

"A professional maintenance worker who makes money on tools to eat and leave the scene without even tools, perhaps I should understand that he is nervous. ”

"But when I saw the tools in your kit, I became suspicious for the second time, because those tubes looked more like gun barrels. ”

"Inside one of the tubes, I smelled a familiar smell. ”

Seeing Gao Xiaozhe's face turn blue, Gu Chen bowed forward and said, "That's right, it's the smell of gunpowder." ”

"Bang!" Gao Xiaozhe stumbled with his feet as he retreated, and slammed directly into a small table.

He quickly held on to the small table to keep himself steady.

At this moment, he was forced into a corner by Gu Chen, and there was no way to retreat.

Gu Chen handed the electric drill to Lu Weiwei and said, "You are very smart, you have done something that no one has ever done, I just want to know, where did your bullets come from?"

"I ......"

"You don't have to quibble anymore. Seeing that Gao Xiaozhe was hesitating and thinking, Gu Chen directly interrupted: "Because this is the case, we can bring the tools back to the testing room and test all the remaining items, and we can always find traces of bullets and gunpowder." ”

"So...... The murderer is you. ”

"...... Uproar"

Gu Chen's voice fell, and the scene was in an uproar again.

The co-authors worked hard for half a day to search for weapons, which are the tools used by people to repair them.

This made many old colleagues present stunned, and they felt that the future life was terrifying, but it was really not something that could be said clearly in one or two sentences.

Zhao Guozhi also nodded slightly.

At first, I was still worried about the missing guns.

Zhao Guozhi also knows that if he can't find a firearm tonight, it will have very serious consequences.

But now Gu Chen has successfully found the principle of bullet firing through his own judgment and reasoning.

In this way, how the bullet was fired into the head of the deceased Brother Hao, can be explained at the scene.

Gao Xiaozhe was a little desperate, covering his cheeks with his hands, and regretting a little: "It's just a little bit, just a little bit, I can get out of this place." ”

He looked up at Gu Chen and said with hatred: "But why did you expose me?"

"Give me a few more seconds, just a few seconds, and I can get out of this place, and I can disappear and you cops will never try to find me. ”

"But why? Why did you stop me?"

Gao Xiaozhe's tears flowed.

I thought I would be able to walk a few more steps and walk out of the bar on my own.

But now Gu Chen stopped himself and restored the process of murdering Brother Hao one by one.

And, according to their own tools, successfully found the remains of bullet gunpowder.

With these evidences, even if Gao Xiaozhe has 10,000 reasons to get away with it, he will still be in danger in the end.

originally thought of the perfect escape technique, and even did not hesitate to kowtow to show weakness in order to win the sympathy of Zhao Guozhi, director of the Furong Branch.

But it all seems to be too late.

I did so much foreshadowing, and even brought in Wang Haifeng, the bar manager who was kept in the dark, to confirm his identity.

I thought things could go the way I planned.

But Gu Chen's appearance was tantamount to extinguishing his last flame of hope.

......

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