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.
Fire in the Hole
Generate 6-30 Ammo for each enemy hit with Frag Grenade.
Reduce your weapon recoil by 20-100% while using Iron Sights.
Run and Gun
Regenerate 2-10 Ammo every 1s while using Hustle.
Gain 5-25% Lifesteal while using Iron Sights.
Use grenade a lot and generate ammo meanwhile.
Lifesteal can be swapped but I felt weak sometime in fight.