Prototype UP77 "Limitless Potential"

The Prototype UP77 "Limitless Potential" is a unique laser gun in Fallout 4.

Characteristics
This unique laser gun possesses the Never Ending effect, which grants an unlimited magazine capacity and never needs to be reloaded, but still requires ammunition to fire.

Weapon modifications
The specific weapon modifications fitted to the gun when found are level dependent and will vary.

Variants

 * Laser gun, the standard variant.
 * Old Faithful, a unique laser pistol with the Instigating effect, which does double damage if the target is at full health. It is sold by Arturo Rodriguez in Diamond City.
 * Survivor's Special, a unique laser pistol with the Bloodied effect, which deals more damage the lower your health is. It is a potential reward for completing The Lost Patrol, or it can be stolen from Paladin Brandis before completing the quest.
 * Good Intentions, a unique laser rifle with the Enraging effect which, on critical hits, causes targets to frenzy. It is carried by Clint.
 * Righteous Authority, a unique laser rifle. With the Lucky effect, its critical hits do double damage and the critical meter fills 15% faster. It is given as a reward for completing Call to Arms.
 * Wazer Wifle, a unique laser rifle with the Never Ending effect, which gives the weapon unlimited ammo capacity and remove the need for reloading. It is given as a reward for completing three unmarked quests for Shaun after finishing the main quest with any faction.
 * Protectron's Gaze, a unique laser pistol with the Rapid ability, boosting its fire rate by 25% and its reload time by 15%. It is carried by the Mechanist.

Location
The UP77 is found in University Credit Union at University Point. Inside the Credit Union, one will find a bank vault with a Novice-locked terminal. After hacking and opening the vault's door, the Sole Survivor will be in a room with some locked safes. On the second row, there will be a Master-locked safe; opening the safe will reveal a red button. Pressing it will open a wall to the right and on the large table in the middle of the room will be the UP77.

Bugs
Two prototype UP77's with different mods installed may spawn.