As soon as you step into the workshop of the machine factory, everyone will feel that they are immediately thrown into a sea of sounds: the hum of the steam engine when the sky axis rotates, the sliding sound of the transmission belt, the sound of various cutters cutting, planing and drilling and boring metal, the sound of tools and sand wheels contacting, the sound of metal collision, the rumbling of cranes, the snorting of compressed air, the rolling sound of various gear snapping transmissions, the sharp, coarse, dull, thick, loud, short, intermittent, continuous, sudden burst of ......

All kinds of voices poured towards the people in the workshop together, all of them feeling like they were going to be overwhelmed. Pen & Fun & Pavilion www.biquge.info large or small parts and lathes, milling machines are produced, these glowing metallic luster, and even with milling knife marks after inspection, qualified will be sent to the processing workshop for quenching hardening and blue and other surface treatment, and finally will be sent to the car assembly workshop for assembly.

After more than a year of development, compared with the workshop-style machine bureau that could only repair guns and produce ammunition in the past, the current Seoul Machinery Bureau has initially developed into a large-scale machinery factory, in addition to being able to engage in machine tool repair, and even able to produce some small and medium-sized machine tools.

On the other hand, because it was originally the only "modern arsenal" in North Korea, it did not give up the production of munitions, such as grenades and mortars equipped by the police department. Although the Beiyang Gun Bureau once gave up the production of rifles because it provided a large number of rifles, it did not give up the research and development of rifles, and in the past year or so, several Chinese and foreign engineers are still working hard to design new rifles.

"Whoa, whoa, whoa......"

Inside the test workshop. After the rifle is assembled. The assembler immediately pulled the bolt repeatedly. Pull the trigger to check if the rifle fires properly.

For the workers in the test shop, they seem to have become accustomed to producing 10 to 20 rifles at a time for the designers to test as they do now, and they have produced more than a dozen rifles before and after, and each improvement of the rifles will change slightly compared to before. Even the caliber of the synchronous gun was changed from the Ying 77 to the German 79.

"The German 7.9mm rifle cartridge uses a smokeless charge and is designed to be a bottomless bottleneck round, which is more advanced than the British 7.7mm rifle cartridge, and the use of the new guns and cartridges will give the new infantry a great tactical advantage in terms of accuracy and range......"

A smile appeared on the face of the bolt when it was quickly pulled, and the bolt structure of the "No. 13 Test Gun" was simplified to the extreme compared to the "No. 1", and many small parts were eliminated. Not only does it look extremely simple on the outside, but it is also easier to produce. In fact, the past 12 tests have been more centered around the bolt.

Originally, the bolt and receiver were sketches drawn by adults, but Zheng Tingxiang and several American designers used sketches to redesign the bolt on the basis of retaining the characteristics of Lee's bolt, and tried to produce 12 batches of rifles before and after, each time a certain progress was made, and the machine gun became more and more mature.

"Of course, after all, the British .303 rifle cartridge is a black medicine bullet, which naturally cannot be compared with the German 7.9 mm......"

As an American firearms designer, Steele is still accustomed to the metric unit of the Korean Administration, which is actually the French metric unit, which is undoubtedly a huge test for Steel, especially when drawing drawings, there will always be some problems in conversion, but now he is adapting to this change little by little.

"However, the only regret is that the chemical plant cannot produce smokeless propellant ......"

At the beginning of the establishment of the chemical workshop in order to manufacture the chemical raw materials required for production, with the help of foreign technicians, it slowly began to manufacture a variety of acids required for production, and began to manufacture explosives before March, so that the power of grenades and shells manufactured by the Machinery Bureau has been greatly improved, and it has become the "trump card" product of the Machinery Bureau.

However, in the production of propellants, it still stays on the basis of black medicine and pills, and there is not much progress in the development of smokeless propellants, so that the gun and ammunition workshop has to use imported propellants to assemble bullets.

"It can always be solved, but if it doesn't work, just buy a patent from Nobel!"

Put the rifle into the box, Zheng Tingxiang said in a firm tone, now the machine bureau has a great demand for smokeless propellant, from guns to mortar shells, all of them do not need smokeless propellant, especially the latter, there are many disadvantages of using black medicine to launch the cartridge, such as the firing distance is closer, the hit rate is not high, especially the residue in the barrel is more, after firing dozens of shells, the projectile body can not enter the chamber, affecting the continued launch, and the only option to solve the problem is to use smokeless propellant, but the problem is that it needs to be imported from abroad.

For Zheng Tingxiang's words, Shi Green just shrugged his shoulders noncommittally, for the introduction of technology patents, the Machinery Bureau has never been harsh, just like the Machinery Bureau took the "tailwind ship" purchased by the Beiyang Fleet on a large scale, and spent tens of thousands of pounds to introduce the patented technology of rapid-fire guns 4.7-inch and 6-inch rapid-fire guns from the United Kingdom, if they can't solve the relevant technology in a short time, they will eventually introduce patents.

The rapid sound of gunfire continued to sound on the shooting range, when the firing lever was pressed, accompanied by the rapid gunfire, the rotating elbow next to the receiver continued to bounce back and forth, the golden bullet casing continued to pop out from under the receiver, and a little water vapor could faintly be seen coming out of the water injection hole at the thick cooling water pipe, Tang Haoran, who was standing on the side, supported his chin in his right hand and his elbow was cushioned on his left hand.

Now this epoch-making killing machine has only just been launched, compared with the machine guns in later movies and old photos, these two Maxims have thinner cooling water pipes, and the receiver is extremely "tall", to be precise, he is not even mature. In fact, the most famous Vickers, MG08 and M1910 in the Makqin machine gun are all products after 1900, and after more than ten years of continuous simplification and lightweight improvement since its invention, the famous Makqin machine gun has really matured and become the "big killer" of World War I, and the current two machine guns M1891 are far from mature.

"Water-cooled, water-cooled ......"

With these two words on his lips, although he knew the importance of the machine gun, Tang Haoran could not convince himself to accept the water-cooled machine gun anyway, although the water-cooled machine gun was known as "under the condition of ensuring cooling water, it has almost unlimited continuous shooting ability", but its premise is to ensure cooling water, and the Maxim machine gun must constantly "drink water" when working, in order to ensure its shooting, in addition to the need to back up the barrel and parts, on the battlefield, many soldiers sometimes need to contribute their own drinking water and even urine.

On the surface, water cooling does not seem to be a problem, but in fact, in the harsh battlefield environment, sometimes even the most basic drinking water can not be guaranteed, let alone machine guns, heavy machine guns will become ornaments without cooling water to shoot more than 100 rounds of bullets, just like the war that broke out on the peninsula in history, if the volunteers on Ganling are water-cooled machine guns, in the case that people can't drink water, how to ensure the demand for machine guns?

Although this is an extreme situation, there are too many extreme accidents on the battlefield, and there have been more than one occurrence in the War of Resistance against Japanese Aggression where machine gunners carry buckets of water everywhere, and when they return, the machine guns have been blown up, or they have died on the way to find water. And in regions such as the Northwest, cooling water is even more difficult to find, and it is clear that water-cooled machine guns are not the best option.

But in this era, are there air-cooled machine guns?

The answer is obviously no, there were no air-cooled machine guns in this era, and even the Hazikes machine gun was invented several years later, and the Czech version was even more ...... Bolt offset latching?

Thinking of the Czech type, Tang Haoran naturally thought of the bolt offset locking structure that he had "studied", in fact, it was not a study, but out of curiosity about the "artifact" of the Anti-Japanese War movie, he had studied his structure, and naturally "studied" the bolt offset locking that was improved from Hazikais, and its structure can be described as extremely simple, just through the guidance groove at the tail of the air bolt to stand up or close the combination of the bolt and the hard locking support surface in the receiver.

"Maybe ......"

Recalling the bolt offset locking structure of the Czech machine gun in his mind, Tang Haoran compared its structure in his hand, and the pictures and materials that had been forgotten in a corner of his mind flashed in his mind from time to time.

"It seems that the structure is simple and can be studied...... However, the capacity of the magazine seems to be increased, if the capacity of the magazine is not increased? ”

Using a longer magazine?

Tang Haoran immediately rejected this idea, after all, the current needs of the troops are heavy machine guns with strong firepower and sustained firepower, which is obviously not something that Czech machine guns can satisfy, unless the problem of the magazine and its barrel being easy to overheat is solved.

"What about a heavy barrel?"

At the same time as a thought emerged, Tang Haoran thought of the controversial drum in later generations, if the drum was used instead of the magazine,

"It seems to be a bit of a blocker, well, you can change to the left side of the feed......"

When his lips whispered, Tang Haoran looked at the two Maxims again, now that Maxim Qin is not very mature, instead of imitating this immature machine gun, it is better to carry out research in this area before everyone realizes the importance of machine guns. What's more, the price of Makqin is too expensive, according to the speculation of the Machinery Bureau, even if it is self-produced, the ex-factory price cannot be less than 1200 yuan, and the air-cooled machine gun with a simple structure is always cheaper!

Moreover, both the police department and the new army needed a large number of machine guns, and the cheaper price meant that the troops could be equipped with more machine guns, and more machine guns meant more combat effectiveness in this era.

"That's right! That's it."

After repeatedly weighing the pros and cons of the self-developed machine gun, Tang Haoran turned his gaze to the soldiers of the new army near the shooting range, and his eyes became solemn.

"You can't let me down! China's future depends entirely on you! ”

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