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prototype railway rifle is a unique weapon in .
Unlike the regular railway rifle, this variant has severely reduced damage and fire rate, and only holds a single spike in the chamber. It also cannot be modified.
Can be stolen off of
Terry who is helping test it with Tinker Tom. This event occurs after meeting Tinker Tom for the first time. The prototype spawns during this event, and it will disappear from Terry's inventory soon after he picks himself up from testing the prototype.  Can be looted off the dead Railroad agent during the quest Tactical Thinking.
↑ Conditions in ConvRailroadGenericTinkerTom02
Pistols .44 pistol ( Eddie's Peace, The Gainer, Kellogg's pistol) · 10mm pistol ( Deliverer, Wastelander's Friend) · Classic 10mm pistol ( Ultimatum ) · ( Acid Soaker ) · Flare gun · Western revolver Shotguns Combat shotgun ( Le Fusil Terribles, Justice) · Double-barrel shotgun · Handmade shotgun ( Triple-barrel handmade shotgun ) SMGs Submachine gun ( Silver submachine gun, Spray n' Pray) Rifles Anti-materiel rifle · Assault rifle · Combat rifle ( December's Child , Overseer's Guardian) · Handmade rifle ( Splattercannon, The Problem Solver) · Hunting rifle ( Reba II, Tinker Tom Special) · Lever-action rifle ( Old Reliable, Lucky Eddy) · Manwell carbine ( Manwell rifle) · Radium rifle ( Kiloton radium rifle, Radical Conversion) · Railway rifle ( Prototype railway rifle) · Syringer Heavy weapons ( Broadsider) · Fat Man ( Big Boy, Nuka-nuke launcher , The Striker ) · Harpoon gun ( Admiral's Friend, Skipper's Last Stand) · ( Junk Jet) · Minigun ( Ashmaker) · Missile launcher ( Death From Above, Partystarter) Other Paddle ball · Pipe bolt-action · Pipe gun · Pipe revolver · Thirst Zapper
Cryo ( Cryolator) Laser ( ) Salvaged Assaultron head · Institute laser ( Virgil's rifle) · Laser musket · Laser gun ( Good Intentions, Old Faithful, Protectron's Gaze , Prototype UP77 "Limitless Potential", Righteous Authority, Survivor's Special, Wazer Wifle) · Gatling laser ( Final Judgment, Aeternus ) Plasma ( BFG 9000 ) · Plasma gun ( Experiment 18-A, Sentinel's Plasmacaster) Other ( Alien blaster pistol ( Hub's Alien Blaster ) · ( Alien atomizer ) · ( Alien disintegrator ) · ( Cosmic cannon ) · Flamer ( Sergeant Ash , Heavy incinerator ) · Gamma gun ( Lorenzo's Artifact gun, Zeta gun) · Gauss rifle ( The Last Minute) · ( Prototype Gauss rifle ) · ( Solar cannon ) · ( Tesla rifle ) · Thunderbolt