Old Faithful

The Old Faithful is a unique weapon in Fallout 4.

Characteristics
This weapon will perform double damage if the target is at full health, making it a strong choice early in the game for stealthy characters, as a sneak attack against a full healthed enemy quadruples the damage done. It's also worth noting that though it starts as a pistol, just like all other Laser Pistols it can be modified to a Rifle, expanding it's usefulness to Commando characters as well as Gunslingers.

Locations
Sold by Arturo in the Diamond City market.