Railway Rifle (Fallout 3)

The Railway Rifle is a custom-built 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.

Characteristics

 * The Railway Rifle falls into the Small Guns category.
 * The gun fires Railway Spikes. Though only moderately damaging, it is very effective at dealing limb damage (due to a 3x limb damage multiplier), able to cripple limbs often with just one shot. On the killing shot, a spike may tear off the struck limb, and possibly pin it to a wall or the floor.(this only works when you a hit a limb with the killing shot so someone won't fight with a missing limb, if the shot kills him/her and it hits a limb it will be torn off).
 * The Railway Rifle has a deceptively low DAM stat, and has moderate accuracy (better than the Assault Rifle, lower than the Hunting Rifle). However, its shots have a lower velocity than bullets, making it more effective at short to medium ranges, and most effective in V.A.T.S. where its limb-destroying effects can be put to precision use. It has a high critical multiplier stat that, depending on your base critical chance, may make the Railway Rifle one of the best non unique Small Guns.
 * Oddly enough, the rifle weighs less than the components. The Steam Gauge Assembly weighs ten pounds, the Fission Battery weighs ten pounds, the Pressure Cooker weighs five pounds, and the Crutch weighs two pounds, so technically, the railway rifle should weigh about twenty-seven pounds. Some components might have been removed from the materials during the assembly, however, which could explain the weight loss.
 * The stock of the Railway Rifle seems to be an actual weapon stock, similar to that of a Combat shotgun, instead of appearing as a crutch like the schematics intended. The hand grip of the crutch can still be clearly seen under the barrel section attached to the piston.
 * The Railway Rifle is one of two weapons best for crippling someone's limbs in or out of V.A.T.S. The only other weapon is the Dart Gun. (The Dart Gun cripples legs)

Construction

 * See Schematics - Railway Rifle

Item Locations

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

Schematic Locations

 * At Rivet City with Abraham Washington. Part of the Stealing Independence quest.
 * The store clerk Tulip in Underworld Outfitters has a schematic for it.
 * MDPL-13 Power Station, on the work bench.

Appearances
Railway Rifle appears only in Fallout 3.

Bugs

 * On super mutants and some humans (possibly others) once they are dead, if you decide to blow off limbs with the Railway Rifle the limbs will simply disappear rather then blowing off.
 * It has been observed by multiple players on different consoles that using the Railway Rifle, especially with V.A.T.S. 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
 * Despite the supposed solidity of the spikes, nothing can be placed on top of them. For example, if two spikes are lodged in a wall at roughly the same height, you are unable to place something on top of them, such as a Chinese Officer's Sword, or anything else. This may have been done on purpose by the developers in order to prevent players from using the spikes as a kind of "ladder," as can be done in the original Half Life with mines, and in Oblivion with the paintbrushes.
 * On occasion, the severed head or limb of an enemy will not be pinned to the wall behind it, but will float in mid air wherever it was shot off. It does not get in the way of the player's walking; however, (s)he cannot shoot through it.
 * If the player burns the enemy he is fighting before pinning his limb/head to a wall, the enemy's head will be nailed to the wall on fire, and will never go out. this creates a cool, Limb torch/lamp during day and is even better at night.
 * If you choose to blow up Megaton and shoot the Railway Rifle at the wall that doesn't exist the spikes will stick there floating in the air
 * After fighting a Radscorpion, if you shoot the claws off the dead body with the Railway Rifle, they will go flying off in a random direction.

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