From the remaining firearms, Qin Fei also dismantled some more useful accessories.

These accessories, in addition to being used to assemble the shotgun turret, some of them can also be mounted on Qin Fei's shotgun.

[Muzzle brake module: transfer propellant gas to reduce recoil]

[Shotgun Muzzle Mod: Changed the projectile dispersion mode to fire horizontally instead of the usual round]

These two accessories are very practical for Qin Fei's shotgun.

Especially the muzzle of the duckbill.

In the Seven Days Killing World, the enemies that Qin Fei had to face were basically zombies. And the weaknesses of zombies are almost all in the position of the head.

By changing the muzzle of a shotgun to a duckbill shape, it will be easier for a lead pellet to hit them in the head.

Qin Fei brought the looted supplies, as well as these guns and accessories, back to the shelter.

Qin Fei asked Xie Nanai to choose one of the four trolls he brought back to keep. And the remaining three trolls, Qin Fei intended to use as materials for the shotgun turret.

After Qin Fei brought back the canned beef and mutton, and the potatoes grown in the cultivated land were ripe, the food stored in the shelter was not very short at present.

But because there are only a few types of canned food, in the past few days, what Qin Fei and Xie Nanai have eaten has hardly changed.

It's either beef stew with potatoes or lamb stew with potatoes.

It's okay to eat like this for a day or two, but it's a little tired of eating too much.

As for the corn that Qin Fei planted before... Because it is a few days later than the sowing time of the potatoes, it has not yet fully grown, and it is not possible to eat it for the time being.

With enough materials, plus Qin Fei and senior engineers who were proficient in this skill, it didn't take too long to make the shotgun turret.

The shotgun turret is not very large, only more than half a meter high.

It is mainly composed of a shotgun, motion sensors, and a magazine that can hold 300 rounds of squirt bullets at a time.

The only downside of this shotgun turret is that it doesn't distinguish between friend and foe as it does in the game.

Once the shotgun turret is activated, its muzzle must be directed in the direction of the zombie tide, as the turret will attack anything in motion.

If nothing else, the next wave of corpses should be even more difficult to defend.

The defenses inside the shelter must be strengthened.

Qin Fei pasted a layer of concrete on the walls in the surrounding pits. After it dries, a layer of iron sheet is nailed to the surface.

In this way, with the solidity of the walls in the deep pit, even if you encounter a fat zombie, you will not be blown up by its self-explosion and collapse on both sides.

The blade trap and power grid under the high platform were also transferred to the deep pit by Qin Fei.

Shotgun turrets cannot attack vertically downwards.

If Qin Fei still concentrated all his defenses under the wooden high platform as before, while he squatted on the high platform to defend.

Then the shotgun turret will definitely not be able to attack the zombies directly below.

In order to prevent the accumulation of zombie corpses in the pit, fill the pit. Qin Fei raised the wall on this side of the pit with concrete by about half a meter.

While Qin Fei strengthened the defense of the shelter, Xie Nanai was in charge of making ammunition for the shotgun.

Boiling gunpowder is a delicate job. But as long as you understand how to operate, it is not too difficult, and Xie Nanai can completely handle it.

In total, she made almost 1,000 rounds of squirt munitions in the past few days.

Half of them were evenly packed by Qin Fei in three shotgun turrets.

In the other part, Qin Fei and Xie Nanai shared half of it, which was used for the consumption of the shotgun in his hand.

After doing this, according to the current defense and firepower of the shelter, Qin Fei believed that even if there were ten more green-skinned zombies at night, they would be able to hold it.

Day forty-two, evening.

The blood moon in the sky has changed from bright red to dark red. Even the shape is very close to a circle.

Qin Fei and Xie Nanai squatted on the top of the pit, waiting for the arrival of the corpse tide.

The range that the shotgun turret can attack is about 90 degrees. So, three turrets could only hold three walls.

The remaining wall was defended by Qin Fei and Xie Nanai.

Ten o'clock in the evening.

From the surrounding night, there was a hissing of spiders.

After this burst of sound ended, dozens of zombies and zombie dogs rushed out from nearby and rushed to Qin Fei's shelter.

However, they soon ended up in the pit, where they were killed by the blade traps and horse rejections.

The shotgun turret is just as powerful.

Some of the zombies were killed by the projectiles fired from the shotgun turret before they could reach the vicinity of the pit.

Several fat zombies appeared on the periphery of the shelter.

But because the walls of the pit had already been reinforced with iron sheets and concrete, the self-explosion of these fat zombies failed to blow them up.

Qin Fei and Xie Nanai defended until midnight.

Around the shelter, many figures emitting a green light gradually appeared.

Qin Fei immediately became alert.

These are green-skinned zombies.

And looking at this number, it is far more than the ones encountered in the last corpse tide. Just by appearing in Qin Fei's sight, there were already about ten.

"You fight the same one with me, kill them one by one!"

Qin Fei said to Xie Nanai beside him.

The green-skinned zombies are extremely resilient, and if the firepower is too dispersed, these mutants can easily recover after being injured.

You have to set them on fire and use trolls to kill them in a short time.

Therefore, Qin Fei's method can be said to be the best choice for dealing with green-skinned zombies.

After falling into the pit, the green-skinned zombie was quickly crushed by the blade trap below.

Taking advantage of the fact that it had not recovered, Qin Fei and Xie Nanai immediately used trolls to mend the knife on it, and after concentrating their firepower, they killed these green-skinned zombies one by one.

The green-skinned zombie has a hard body and strong defense.

As a result, half of the blade traps in the pit were damaged during the cutting process.

But this has little effect on the overall defense of the shelter.

After all, there is also the existence of shotgun turrets, and it is not a matter of missing these blade traps.

After the green-skinned zombie was killed, Xie Nanai suddenly pointed to the distance.

"What's that green dot?"

"What green dots?"

Qin Fei followed the direction of Xie Nanai's finger and subconsciously looked over.

In that direction, a zombie soldier in military armor was rushing towards the shelter. On his chest, there is also a package with a green dot of light....

What is this thing?

New variants?

The zombie soldiers on the opposite side were getting closer and closer to the shelter.

Soon, it rushed within range of the shotgun turret.

Qin Fei and Xie Nanai also immediately raised their shotguns and fired at the zombie soldier.