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.
Swapping to your Pistol grants 20% Lifesteal for 3s.
Increase the maximum Ammo count of both your weapons by 5.
Increase your Movement Speed by 20% for 2s after entering Stealth.
Reduce the Movement Speed penalty of Scope by 80%.
Increase the area that Flare will Reveal enemies by 20%.
Flare deals 250% base damage, has significantly increased Projectile Speed, and has its Cooldown reduced by 10s, but no longer Reveals enemies.