Increase the radius of Frag Grenade's explosion by 40%.
Reduce the Cooldown of Frag Grenade by 1-5s for each enemy hit by it.
Increase your Movement Speed by 10-50% while using Iron Sights.
Fire in the Hole
Generate 6-30 Ammo for each enemy hit with Frag Grenade.
Gain 5-25% Lifesteal while using Iron Sights.
Reduce your weapon recoil by 20-100% while using Iron Sights.
Can work on smaller maps i.e. Ice Mines where enemies clump together.