Increases ammo regeneration speed. Upgrading it provides a bigger magazine and reduces scatter.

• Effect 1
  Lvl 1: Increases ammo regeneration speed by 10%.
  Lvl 2: Increases ammo regeneration speed by 20%.
  Lvl 3: Increases ammo regeneration speed by 30%.
  Lvl 4: Increases ammo regeneration speed by 40%.
  Lvl 5: Increases ammo regeneration speed by 50%.
• Effect 2
  Lvl 1: Reduces scatter and recoil by 10%
  Lvl 2: Reduces scatter and recoil by 15%
  Lvl 3: Reduces scatter and recoil by 20%
  Lvl 4: Reduces scatter and recoil by 25%
• Effect 3
  Lvl 1: Increases magazine size from 18 to 21
  Lvl 2: Increases magazine size from 18 to 24