Does somebody have information of kS6V 85mm anti-aircraft gun？

[linkoping]

I wonder how heavy, how fast the RPM,and what the hell the nearby anti-aircirft gun it is(looks like it has 4*85mm barrels)

 

[overscan (PaulMM)]

Context? Where were the photos taken?

 

[Grzesio]

Some information Russian:

Опытная 76-мм зенитная пушка КС-6 (1955г. )

war-russia.info

Âåñòíèê ÏÂÎ

So it was 7500 kg heavy and the rate of fire was 80 rpm, elevation range was from -3 to +82 deg. The projectile was 5.8 kg heavy, reaching 1000 m/s muzzle velocity and 7000 m ceiling.