I noticed that a tutorial went up showing how to quickscope but it was wrong so im here to tell you how to do it.
1. buy any sniper rifle
2. buy variable zoom for it
3. go into a match
4. when you spawn look into your scope and zoom in once or twice(dont zoom again until you die)
5. you can now quickscope still hard though just remeber to zoom in once or twice every time you die not when you look down the scope.
This method is actually found by optic predator a really good sniper so all cred goes to him.
p.s if you having trouble pm me ill give detailed tutorial. plus rep if it works