Victory Rifle (Fallout 3)

The Victory Rifle appears in Fallout 3 and is a unique version of the Sniper Rifle. The Rifle is inside a locked (Very Hard) Locker in the Abandoned Shack west of Rockbreaker's Last Gas. This will require a 100 Lockpick skill, and there is no key or trigger that will open the locker.

Also, it is reported that high level Talon Company mercenaries may also be found carrying this weapon. This is as of yet unconfirmed.

A critical hit with this rifle will knock enemies down for 1 to 4 seconds.

Also there is a glitch on the PC version which allows the player to get the rifle from the abandoned shack without 100 Lockpick skill. This involves having Jericho as companion, who upon entering the shack and being close enough to the locker takes and equips the rifle and starts shooting at named radroaches in the cage(not confirmed on other companions but quite possible it works).