China's 85-type sniper step is so similar to the svd sniper step made in the Soviet Union. Is it an imitation? Which model has better performance?

It is a Russian SVD sniper rifle. Since the founding of New China, our army has not been equipped with special sniper weapons. Although some sniper rifles have been designed, they have not been successful. Later, the SVD used by the Vietnamese army was seized in the self-defense counterattack against Vietnam, so this trophy was used for imitation design. In 1979, a 1979-style 7.62 mm sniper rifle was finalized. In 1981, it was trial-produced and equipped with troops. It was mainly used as a single weapon used by border posts and infantry snipers to kill a single important target in the middle and long distance. Commonly known as type 79 sniper rifle; During the war between the two mountains, some grass-roots officers of our army used it to create a 13-meter sniper record. Because the Soviet Union was a socialist country at that time and did not recognize intellectual property rights (China was the only socialist country with patent law at that time), there was no investigation into such direct imitation of the Soviet Union. Later, the gun was formally produced and finalized in 1985, and renamed as Type 85 sniper rifle. The difference between the 79-type design and the 85-type production is not clear. There is a rumor that the 79-type sight illuminates the reticle with a small light bulb, while the 85-type sight is changed to a diode, but it has not been accurately verified. In short, 79-type sniper rifle or 85-type sniper rifle are actually two names of the same weapon, but when it comes to China's imitation SVD abroad, most of them only call it 79-type.