OK you Knight guys, help me out here.

I've never owned a Knight and know little about them. A guy in my area has and older .50 caliber for sale that he says has never been fired. He seems to know little about it also.

The picture he sent me is poor. Can anyone tell if this is this an MK85 or something else?



Also, I've heard that early Knights had various twists (1:48, 1:32, 1:28). Is that true.