The Chinese have two types of gas operated semi-automatic .50/12.7mm caliber rifles. Both only shoot at 2 MOA with standard ammunition.
This is enough for anti-material work but well below western sniper rifle standards. For comparison, the Barrett M82 is supposed to shoot sub MOA (less than 1 MOA).
It is available in either 12.7x108mm or .50BMG.
It comes in two versions.
and the bullpup M99B / M06
More info here.