Regarding the gun used in the case, Tetsuya Tsuda, a firearm critic, analyzes that "the caliber is quite large, and a lot of gunpowder is used, so it was very powerful."
Regarding the handmade gun used in the incident this time, an iron pipe wrapped with tape from the reported video etc. is the barrel, and a gun like a "matchlock gun" that stuffs gunpowder and bullets in the barrel It is said to be seen.
And since it has something like an electric cord, it can be thought of as a simple structure that shorts electricity, causes sparks, ignites gunpowder, and fires.
These types of guns take time to refill bullets and gunpowder, but we analyze that the gun uses two pipes and seems to be a "double type" that can fire bullets twice in a row. ..
Regarding this, Mr. Tsuda points out, "If you make two shots, even if you miss one shot, it will be the second shot, so I think that you made two shots to ensure execution."
Furthermore, the caliber of the gun is thought to be about 2 cm, which is about twice that of a normal pistol, and it is thought that a lot of gunpowder was used because white smoke spread when firing, and it was highly powerful.
Mr. Tsuda said, "I think that even if it was made by hand, it was quite powerful. It seems that it was packed with a considerable amount of gunpowder, and because it has such a large caliber, it was quite deadly. It does not decrease, and if it hits, it has enough ability to kill a person with a considerable impact. "
On the other hand, he points out, "These guns can be made only with tools that can be bought online or at home improvement stores and used in daily life without advanced expertise. It is very difficult to crack down in advance."