DOUBLE DOWN - On spawn, this weapon occasionally gains additional ammo.
Increases ammo available when you spawn
In Destiny, DOUBLE DOWN is a Weapon Upgrade that can be found on Rare and Legendary Fusion Rifles and Legendary Sniper Rifles in the game. Weapons in Destiny pull each Upgrade at random from specific pools (with a few Weapons that are an exception).
To see more info on exactly which Weapons this Upgrade can be found upon click the link below:
To see more about how this Weapon Upgrade fits into these pools, please click the links below:
FUSION RIFLE WEAPON UPGRADES
SNIPER RIFLE WEAPON UPGRADES