I just bought my vz58 and im in love with it, yes its still a virgin ( as in i havent taken it to the range yet

) but since I have nothing better to do in my time other than find ways to spruce up my guns , I have been wanting to add a side mount on my vz to accompany a scope.
My question is , whats involved in this process? As in I find it rare to see a side mount on a vz58 or some one who has done it. I havent seen many pictures of this, only one. I want to add a scope for those long range shots . And because I just think it looks amazing.
So is this side mount detachable ? Can it be? Or is it a permanent thing? How do they work? How much do they cost? Do you have to buy a scope first , and then get a side mount measured out?
Well heres a picture of what i have in mind, I dont know whos vz this is, i just simply found it on the net. I think it looks bleep great.