Laser Pistol (Fallout 3)

The Laser Pistol is a weapon $$

Gameplay
Like other energy weapons, the Laser Pistol has a multiplier on critical chance, making critical hits more frequent with this weapon over most others. Critical hits that are fatal reduce enemies to smoking piles of ash, but this process does not damage any equipment or items the victim was holding or wearing prior to their death. The beam will ignite any gas leaks that it passes through.

Shops and merchants sell Laser Pistols. Energy Cells can often be found in ammunition boxes, other various containers, and on destroyed robots. One can find Energy Cells in the National Archives sub-basement or in the RobCo Facility.

Transcript
From research in the Fort Independence terminal entries:

Durability
The Laser Pistol can fire a total of about 729 shots, the equivalent of 25 reloads, from full condition before breaking.

Variants

 * Colonel Autumn's Laser Pistol - A unique variant carried by Colonel Autumn prior to the release of the add-on Broken Steel.
 * Colonel Autumn's Laser Pistol - A unique variant carried by Autumn with the add-on Broken Steel installed.
 * Cross' Laser Pistol - A unique, non-playable version used by Cross with identical stats to the regular version.
 * Protectron's Gaze - A unique variant given by the Mechanist.
 * Smuggler's End - A unique variant carried by Elder Lyons.

Locations

 * Two in poor condition can be found in the deli to the right of the cash registers at the Super-Duper Mart.
 * There is a Laser Pistol with several Energy Cells on a table just inside the entrance of Vault 92.
 * Another decent condition Laser Pistol can be found in the Farragut West Metro Station tunnels, in a safe that is unlocked by a nearby terminal. It can be found during the Following in His Footsteps quest.
 * It can also be found on Initiate Jennings while aiding Lyons' Pride in their defense of Galaxy News Radio.
 * It is commonly used by both the Brotherhood of Steel and Enclave as a sidearm.
 * The dead Regulator will have one.
 * Armitage, Ben Canning, the Mechanist, Tinker Joe and William Brandice all use them.
 * Paladin Gunny carries one.

Related quests

 * The Outcast Collection Agent