The first is the cost. At present, China's military spending can't support so many soldiers in China to have a sight per capita, while Americans have one. The reason is that there are few active servicemen, the military expenditure is several times that of ours, and the equipment pressure is not great, so soldiers can also buy it privately.

At present, in our country, the basic ones that achieve equal treatment are special warfare brigade, professional special forces, scouts, special warfare troops of armed police force and local public security special police team.

Secondly, it is practical: China's army will not overuse the sight, which will lead to dependence. Unless special tasks are performed, sights are generally not used, and their reliability and adaptability to battlefield environment are not as good as mechanical sights.

The third is that the PLA is basically the first to bomb, and many times it doesn't need guns from a long distance! Have you ever heard of this famous saying of the People's Liberation Army? Don't pile people up if you can bomb them! Anyone who can use a Grenade can't use a gun.