SECRET ROUND - Missing a shot from this weapon's burst will fire a fourth shot.
Missing a shot in a burst grants a fourth round
In Destiny, SECRET ROUND is a Weapon Upgrade that can be found on Pulse Rifles in the game. Weapons in Destiny pull each Upgrade at random from specific pools (with a few Weapons that are an exception). This Upgrade loads and fires a fourth round if one of your rounds misses the target.
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:
PULSE RIFLE WEAPON UPGRADES