"Boom!"

The grenade, which was hit by a bullet, exploded in mid-air. The steel balls embedded in the grenade bushing scattered in all directions, hitting the railing of the corridor of the circular building on the second floor, and on the walls around the underground experiment, making a "crackling" sound like fried beans.

Luo Hao, Situ Kong, Zhou Bai, and Lin Xiaoyang were in good condition, and the central test bench, as well as the computer desks around the central test bench, gave them resistance to the part of the steel balls flying towards them.

But the reinforcements on the second floor are miserable, although the circular corridor on the second floor is the commanding heights of the attack, but there is no cover around that can be evaded, and the only railing in front of the armed guards and the "undead" special service squad basically does not play any role in blocking the steel ball!

Because the "undead" special service squad is well-equipped, they not only wear body armor, but the metal skull mask on their faces also has bulletproof functions, and the steel ball rain does not cause much damage to them.

The real tragedy was that of the ordinary armed guards, a round of steel ball rain fell, a total of a dozen fell, a third of them were killed directly, and the remaining two-thirds were more or less wounded.

One of the more tragic armed guards was directly blinded by a high-speed steel ball, his face was covered with blood, and the whole person covered his blind left eye, wailing in pain, rolling on the ground.

Seeing that Situ Kong exploded the grenade in the air, which actually produced such a great killing effect, Luo Hao glanced at the cluster grenade on the ground, and suddenly had an idea in his heart, and asked Situ Kong: "My Neighbor Totoro, how many bullets are there in the machine gun?" ”

Situ Kong took a general look at the bullet box where the bullet chain was stored, and replied, "Fifty rounds!" ”

Luo Hao picked up a cluster grenade at the tail of the basic module and screwed on two manganese steel nail expansion modules, unscrewed the most underground expansion module, took it in his hand, and said to Situ Kong: "After a while, I will throw this expansion module out, you will hit it like just now, and I will blow it up!" Shoot all the bullets! ”

Situ Kong nodded heavily, and at the moment when Luo Hao threw out the manganese steel nail-type expansion module in his hand, he set up the SAW light machine gun in his hand and fired at the dark green cylinder.

"Dada......"

Fifty rounds of ammunition were shot out in the blink of an eye. When the bullet passed through the manganese steel nail expansion module and hit the Tewarer explosive in the manganese steel nail expansion module, the entire module exploded with a "boom".

Hundreds, each less than two centimeters long, but extremely sharp and sharp manganese steel nails, like a goddess scattering flowers, rained again at the armed guards in the corridor who had not recovered from the previous rain of steel beads, as well as the members of the "undead" special service team.

The three armed guards closest to the explosion point of the expansion module were directly blown into hedgehogs by the fine manganese steel nails, and a manganese steel nail sank into the brain from the temple of one of the armed guards, and the wound was small but fatal!

"Right side!"

Luo Hao roared, and threw out another manganese steel nail-type expansion module.

"Dada! Dada! Rumble! ”

Zhou Bai, who shot this time, fired two points, exploded the expansion module in the air, and also blew a rain of manganese steel nails against the armed guards in the corridor on the right.

After the violent explosion, all that remained in the underground laboratory were the screams of the armed guards who had been attacked by manganese steel nails and were not dead but were seriously injured.

Although the armed guards are not dead yet, the manganese steel nails that pierce their bodies will follow the flow of blood and flow all around their bodies.

Just think about it, dozens, or even dozens of steel nails as thin as a cow's hair flowing in the body, even if they don't die, they will bring endless pain to people, which is a frightening thing in itself.

A grenade and the explosion of two expansion modules in the air caused great losses to those armed guards and members of the "undead" special service squad in the circular corridor on the second floor, killing seven or eight and wounding more than a dozen, and the dozen or so injured have basically lost their combat effectiveness.

At this moment, these armed guards and "undead" special service members could not stay in the circular corridor. If Luo Hao and the others threw out a few more, the kind of thing that made people feel chills from the bones just now, the rest of these people would all be finished.

However, the armed guards and the "undead" special service team members above didn't know that Luo Hao threw out a manganese steel nail-type expansion module, although the lethality was great, but after the explosion of this thing, it was covered by indiscriminate firepower, and the four people on his side would also be attacked by manganese steel nails.

Although the tables, chairs, computers, bottles and cans in front of him provided good cover for the four people of Tactical Group B, there were still two "needles that slipped through the net" and pierced Zhou Bai's arm. But fortunately, Zhou Bai noticed it early, and when he felt a stinging pain in his arm, he immediately pulled out the manganese steel nails that pierced his combat uniform with his hands to prevent the steel nails from entering his body.

The armed guards and the "undead" special service team reinforcing the underground laboratory could not stay in the circular corridor at the heights and began to rush down the stairs.

More than twenty people rushed down the stairs in the circular corridors on both sides, and not only that, but there was also a steady stream of armed guards rushing out of the exits of those two tunnels, and in the blink of an eye, the number of enemy reinforcements increased by more than twenty!

Situ Kong, who had changed into a HK416 automatic rifle, fired a point shot at an armed guard in the corridor, knocked him to the ground, and said with a curse: "How many people are here?" As soon as a few were killed, new reinforcements arrived! Even if we can hold on, the bullets won't be enough for us to fight! ”

"The more Inoue Oka sends reinforcements, the more it shows that what we are doing now is meaningful, and we must hold the central test bench!"

Luo Hao used a point shot to shoot the head of the armed guard who rushed to the front, and the corpse of the armed guard with a burst head rolled down the stairs and pulled Luo Hao to the treacherous tripwire set up at the staircase.

"Boom!"

Luo Hao is fixed to the corner of the staircase wall with tape, the shape resembles a large wooden handle grenade, the thunder body is made of cast iron, the surface is grooved, and it is filled with 75 grams of TNT explosives, which can produce 200 pieces of anti-personnel fragments after explosion, and the Soviet-style POMZ-2 anti-infantry mine with a killing radius of up to 7.5 meters was detonated by the corpse that rolled down the stairs.

Looking at the armed guards who were torn down the stairs by the mines and had several mine fragments on their bodies, Luo Hao's eyes were as cold as ice and as hard as iron, and he said in a cold voice: "The people of the Longyin army have wolf nature, whoever dares to make a stab will go up and bite him first, even if he can't bite to death, he has to tear off a piece of meat from him!" ”

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