This is our proprietary skill rating calculation. This has nothing to do with official game ranking or MMR.
The purpose is to show player skill levels relative to other players, not estimate MMR.
Gain 20% Lifesteal while using Iron Sights.
Increase your maximum Health by 50.
Reduce the time it takes to bring up Iron Sights by 45%.
Increase your maximum Ammo by 6.
Reduce your weapon recoil by 80% while using Iron Sights.
Switch your rifle to Three-Shot-Burst mode, increasing your effective range and firing three 210-damage shots every 0.4s.