Railway Rifle (Fallout 3)

The Railway Rifle is a craftable weapon in Fallout 3, made from a crutch that comprises the stock and grip part of the gun, a Pressure Cooker that acts as a firing chamber, a Fission Battery that acts as the firing pin and a Steam Gauge Assembly that comprises the grip, ammo storage and barrel of the gun.

Components
Once you have the schematics, you will need a workbench and one each of the following items:

Easy-to-find component locations
You can find all components in Fort Constantine
 * Fission Battery: RoboCo Plant, Robot Repair Center, about 5 in Pinkerton's 'lab', Super-Duper Mart (Protectron contains it).
 * Pressure Cooker: Northwest Seneca Station, Minefield Homes, Super-Duper Mart, Tenpenny Tower basement, Oasis caverns (near the pool in the last cavern),
 * Steam Gauge Assembly: Warrington Station (5-6 found near Roy Phillips' group), Minefield Homes, Super-Duper Mart, RoboCo Plant, Robot Repair Center, Bethesda Offices West, Metro Tunnels, Oasis caverns (near the pool in the last cavern), Tenpenny Tower Generator room, Fort Bannister.
 * Crutch: Minefield Homes, Pinkerton's lab, Our Lady of Hope Hospital, Hamilton's Hideaway (In Bandit Room), drainage chamber to SE of Signal Oscar Zulu, Oasis caverns (on the bed in the alcove in the last cavern)
 * You can also find everything in one of the rooms in Super Duper Mart.

You can find most of the parts in Hamilton's Hideway or Bigtown

Schematic Locations:
 * Tulip (General Goods Vendor) Underworld
 * Control Room (On the Workbench) MDPL-13 Power Station
 * Reward for Stealing Independence from Abraham Washington

Appearances
Railway Rifle appears only in Fallout 3.

Laszlo Radford uses the Railway Rifle, he is a random encounter who may be found at certain "random encounter" locations throughout the Wasteland.

At Lvl 18+ you have a 2% chance of encountering a Talon Company Merc Carrying a Railway Rifle.

Trivia

 * Seagrave Holmes's computer terminal in Rivet City contains an entry about his failure to create a weapon that fires Railway Spikes. The entry describes his attempts at using rubber bands as a propulsion system, and possibility of making his contraption steam-powered.

Glitches

 * In the XBOX 360 version, equipping a companion with the Railway Rifle may cause the game to freeze during battles frequently.


 * The Railway Rifle causes freezing usually when attacking two or more targets in V.A.T.S.


 * Also after reloading a save any body part will disappear leaving the railway spikes(ps3)


 * The railway spikes can be used to determine the location of invisible barriers surrounding open map areas such as Megaton, for instance firing a shot from outside Jericho's house (at a point) between two protruding pieces of metal on the outer wall where sky is visible and then examining the 'impact site' you can clearly see the railway spikes impaling thin air. Firing a spike into a closed door and then opening the door will have the spike remain its original position.(xbox 360/PC)


 * It has been observed by multiple players on different consoles that using the Railway Rifle, especially with VATS can result in freezing. It is thought that this happens when the player scores a critical hit on a headshot. Bethesda has since announced that this was fixed in the Fallout_3_patch_1.1