As for the airtight door, Qi Lin didn't need to do more reinforcement, anyway, with the thickness of the airtight door, ordinary bullets would definitely not be able to penetrate, and as for the explosives that were powerful enough to blow up the airtight door, even if a few more steel plates were added behind the door, they would definitely not be able to stop it.

What's more, these cold-rolled steel plates are almost all the bulk goods that Qi Lin can buy on the black market, and the rest are basically in the hands of large companies under various consortia, these are important industrial materials, and they will not be sold under normal circumstances.

The defense preparations for the residence were almost complete, and the next thing Qi Lin had to do was to find a way to pass the information on the imminent rebellion of the Red Shirts to the garrison of Vault 187.

And the key to this is that Qi Lin must find strong evidence that the Red Shirts are about to rebel.

The soldiers wouldn't believe a slum dweller, and might be arrested as a rumor-monger - after all, the Red Shirts bring a lot of oil and water to the troops in Vault 187 every month, and there is some mutual benefit between the two sides.

"Proof......" Qi Lin sat on a box full of compressed biscuits, holding his chin and thinking hard.

The Skeleton Legion had already left, and the Redshirts who knew something inside had already been killed by themselves, so Qi Lin couldn't go to the Redshirts' station to steal a few boxes of weapons and gold bars and send them to the army, it was an impossible task.

"Weapons...... Gold bar...... Evidence ......" Qi Lin suddenly thought of those TV dramas about criminal investigation in the old days, the police would often use cameras to shoot the scene of the crime, if he could take some key photos, it should be a powerful evidence.

So, now the problem is to find a way to get a camera or a mobile phone with shooting function.

Qi Lin himself has a mobile phone, which he brought to the underground shelter three years ago, but in the chaos at the beginning, Qi Lin accidentally fell to the ground, which made people step on it several times.

"I don't know if I can use ...... or not"

Qi Lin turned the phone out from a large pile of debris, this is an old-fashioned Nokia brick machine, I have to say that the quality of this mobile phone that can be used to smash walnuts is really good enough, it was stepped on so many feet at the beginning, but there were a few small cracks on the screen, and the plastic shell was slightly deformed.

However, another problem was in front of Qi Lin - although he had a mobile phone, he did not have a charging cable.

"Or ...... I looked at the market and might find a charging cable. Song Xiaodie looked at the pitch-black screen of her phone and spoke.

“…… This is the only way to do it, but this model of mobile phone was discontinued decades ago, and there are still people who use it in backward places like Africa, and it is too difficult to find a Nokia charging cable here. Qi Lin looked at Nokia's charging port, which is an old-fashioned USB interface that has been eliminated by the mainstream market a long time ago.

"You'll have to look for it to find out if there's one, right?" Song Xiaodie smiled disapprovingly.

"Hmm." Qi Lin nodded, handed the phone to Song Xiaodie, and then pulled out a revolver he made himself from the bottom of a case, along with six rounds of 0.45 caliber ACP shells, and handed them to her.

"This is a 'Colt Python' that I imitated, with a point of four or five calibers, and a lot of recoil, but with your current physical fitness, it should be able to control it...... Still, I hope you're better off not using it. ”

"Well, I'll be careful myself." Song Xiaodie took the pistol and bullets and put them in a crossbody bag that she carried with her.

……

Song Xiaodie went out, and Qi Lin took out a flat fiberglass board and placed it on top of the two wooden boxes, then took a rusty barrel and began to slowly polish it with sandpaper.

If you want to infiltrate the Redshirts' station to take pictures, the weapons you carry must be easy to hide, and most importantly, you have to add a muffler, and with these two requirements as indicators, Qi Lin plans to tailor a new pistol for himself.

This is a nine-millimeter caliber submachine gun barrel, after Qi Lin polished off all the rust inside and outside the barrel, he directly cut off half of the length, so that although the initial velocity of the discharged bullet will be much slower, the range, penetration and power will be greatly reduced, but considering that this is a sneak operation, the most important thing is concealment, and the requirements for other aspects are not too high.

Anyway, it is impossible for those Red Shirts to wear equipment like body armor, which is enough.

It was a very hard job to cut and polish the barrel by hand, but fortunately, Qi Lin's current strength attribute had reached the standard of a first-level evolutionary, and his eyesight had also improved a lot, and in less than an hour, a shiny pistol barrel was lying on top of the fiberglass plate.

The rifling inside the barrel had already been processed, which did not require Qi Lin to bother, and then Qi Lin took out another piece of wood, drew the shape of a grip on it, and sawed it with a small saw.

There was no intact pistol bolt in the parts found on the black market, and Qi Lin did not have a lathe to process that kind of precision parts, so everything had to be made by hand, so he decided to use the firing device of the revolver, although this firing device has a small ammunition capacity and slow reload speed, but it is better than simple and reliable.

The grip, receiver frame, barrel, and nest are just a few parts that make up a seemingly crude, but durable, revolver.

But this was not enough, Qi Lin rummaged in another box for a while, and took out an octagonal black metal cylinder.

This is the treasure at the bottom of Qi Lin's box, a pistol model vortex silencer, a product of OSS company, the silence effect is several times more than that of ordinary silencers, of course, the price is also.

Putting the vortex silencer on the muzzle of the revolver, Qi Lin pushed six nine-millimeter pistol rounds into the nest, then pulled the safety open, aimed the muzzle at a wooden box used to hold garbage in the corner, and pulled the trigger-

"Poof."

There was a muffled sound from the muzzle of the gun smaller than a gentle clapping of hands, which would have been completely negligible if it had not been for the fact that the needle had fallen in an environment where it could have been heard.

The shape of this revolver is also very small, the length is only more than ten centimeters, which is not as long as Qi Lin's palm, even with the vortex silencer, it is less than twenty centimeters.

As for the power, at a distance of less than ten meters, it is easy to penetrate a little or two layers of five-centimeter-thick wooden planks, and then leave a shallow pit on the rock wall to deal with the human body, which is absolutely enough.