The first firearm was now complete, and the next step was to rigorously train a group of throwers.

These grenades can play a significant role in close-range and medium-range combat in future confrontations with Haru.

Of course, in my memory, those Haru were already this powerful before they started taking drugs. If, as the leader said, all their physical indicators rise to their limits after eating the mushrooms.

If we couldn't launch a saturation attack on these Haru in a tiered manner, those few grenades probably wouldn't have been enough.

So now, in order to feel more at ease during my time away from the tribe, I think it's necessary to develop a high-powered long-range attack weapon similar to an RPG rocket.

I had a design for this weapon in my mind before, but this thing is not like making a grenade. Its danger level increases several times over, the main problem being its stability.

Because it is a handheld launcher, this places high demands on the barrel's pressure resistance and overall performance.

I cannot be sure whether the steel we produce meets the required standards, and we also have no way of knowing what the pressure resistance standard is.

The experimental grenade could also be used to avoid the explosion damage by using trenches. If the barrel quality was substandard and caused a barrel explosion, the experimental personnel would die on the spot, probably without even leaving a trace.

After considering all factors, I've decided to abandon the idea of ​​creating an RPG.

However, this does not mean I will compromise and give up developing long-range strike weapons.

Even without propellant propulsion, I have other ways to achieve the same launching effect. Thus, an arrow-shaped impact grenade, like those in the movie *First Blood*, came to mind.

The firing principle of this type of grenade is actually somewhat similar to that of a mortar shell. There is a firing pin at the front of the shell, which is lifted up by a spring mechanism.

Due to the inertia of the shell, the firing pin at the front end will strike an object during flight, triggering the detonator inside the shell and detonating the explosives inside.

Following this logic, the arrow would only explode the moment it hits its target. In some ways, this is safer than a time-delayed grenade.

If the arrow's firing speed could be increased further, it would become a grenade launcher for cold weapons.

Using rapid fire and quantity to compensate for the lack of power is not a bad idea.

Imagine what a spectacular scene it would be if a large group of drug-addicted Haru were charging towards us, and we happened to have a batch of grenade launchers that could saturate the Haru group from a hundred meters away!

Then I embarked on another major manufacturing project, and I still felt that a crossbow would be a better choice for the firing platform.

Firstly, crossbows have a long range and great power, and their accuracy and stability can also be guaranteed.

However, the only drawback of the crossbow is that it is slower to load arrows, so we need to make some improvements to the crossbow design based on this aspect.

My design involves carving a groove in the handguard of the crossbow to hold arrows, and still using the magazine-type feeding method to load arrows with high-explosive heads.

Due to their size, the size of each high-explosive warhead means that this method cannot hold too many; a magazine can only hold five such grenades.

However, our advantage lies in the sheer number of grenade launchers, enough to equip almost every person with one. The grenades are filled with a high concentration of nitroglycerin clay, resulting in a considerable explosive force.

Arrows are fired using the conventional string-mounted firing method. Once a grenade is fired, the spring mechanism inside the magazine automatically bounces the grenade and locks it into the arrow rail of the crossbow.

This semi-automatic grenade launcher, combined with hand grenades and repeating crossbows used for individual combat and small-scale maneuvering, was also effective.

I dare say that if the other side doesn't send tens of thousands of cannon fodder to take our place, they probably won't even be able to get close to our territory.

Based on our current estimate of Haru's troop strength, if they choose to engage in a direct confrontation, their forces will likely suffer more than half their casualties right from the start.

Because this semi-automatic grenade launcher has a simpler structure than the previous repeating crossbow, the manufacturing process did not encounter any major obstacles.

However, I've gotten myself into a dilemma regarding the warhead.

I wanted to fill the grenade launcher with iron pellets to increase its lethality, but adding iron pellets would make the launcher heavier, which would greatly reduce its flight distance when fired from a crossbow.

In addition, the amount of nitroglycerin explosive inside will also be reduced, and the explosive power cannot be effectively guaranteed.

However, if not used, the fragments produced by the explosion of a warhead are quite limited. Beyond ten meters, the force of the shockwave is not as powerful as it would be for humans.

Therefore, a compromise needs to be found if we want to cause widespread damage. We were stuck on this issue for two days.

While packing my backpack and looking for something, I inadvertently took out a bottle of sap from a sinkhole that I had brought back from there.

All the troubles of the past few days vanished at this moment.

I've been struggling with how to add the iron pellets. Why not try a different approach and put something easier to carry in the arrows?

Right now, the sap from the guar gum tree, which is practically jungle gasoline, is the best additive I have.

I want to change physical attacks to magical damage!

I need to make an ingenious, extended drill bit to hollow out the inside of the arrow, and then fill the inside of the arrow with the sap of the accelerant guarana tree.

Only by sealing the hole in the arrow's fletching with clay and resin can the arrow's normal flight be guaranteed and will not be affected.

When the high-explosive warhead at the tip explodes, the immense pressure shatters the arrow. The accelerant inside is also instantly ignited, radiating outwards along with the shockwave to a much greater distance.

The thick fur on those Haru is highly flammable. I wonder if they can maintain their arrogant offensive posture if they encounter a little accelerant.

The excruciating pain from burning flames is incomparable to the damage caused by sharp objects. It inflicts double the torment on the victim's mind and body.

Even if Haru ate that magical mushroom, I don't believe they could be completely unaffected by the burning flames.

A day later, I added sap from the sap to the improved arrows. I also found a spot to test the effectiveness of the grenade launcher I had.

My goal this time was a long distance, so I set my location at a place 100 meters away.

At this distance, the crossbow needs to be tilted upwards at a slight angle to launch the arrow in a parabolic trajectory in order to reach a greater distance.

After I smoothly fired five grenades from different positions with my crossbow, the effect of these grenades stunned me. This is a complete life-reaping machine!