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.
Reduce the Cooldown of Frag Grenade by 5s for each enemy hit by it.
Gain 10% Lifesteal while using Iron Sights.
Increase your maximum Health by 100.
Reduce the time it takes to bring up Iron Sights by 45%.
Reduce your weapon recoil by 60% while using Iron Sights.
Heal for 300 per second while using Hustle.