Si Yiyan took out a clear plastic bag that contained two bullets. "Look at these two bullets and tell me if you see any differences."
Gu Yuexi took over the bag and scrutinized it closely for a moment. "These two bullets are exactly the same in both model and size. It can be ascertained that they were fired from the same gun."
One of the two bullets looked a bit worn and not as shiny as the other one. But this didn't affect his ability to judge that these two bullets were fired from the same gun.
The more high-end the gun, the more confidential the makeup of its bullets. This type of bullet would usually be produced only by special order and was not subject to mass production. It was like Rex's Killer, whose bullets were all custom-made and entirely unique.
And in his opinion, these two bullets were definitely custom-made bullets.
It was very easy for people like them who used guns all the time to discern this.