Well according to a certain website.
Displacer Glove: Pushy
Oh, Baby!
Laser Rifle: AER14 Prototype
Spiked Knuckles: Love and Hate
Alien Blaster
Gauss Rifle: YCS/186
Laser Pistol: Pew Pew
Bladed Gauntlet: Cram Opener
La Longue Carabine
This Machine
Plasma Rifle: Q-35 Matter Modulator
9 Iron: Nephi's Golf Driver
Euclid's C-Finder
Straight Razor: Figaro
Boxing Gloves: Golden Gloves
9mm Pistol: Maria
Lead Pipe: The Humble Cudgel
Grenade Rifle: Thump-Thump
BB Gun: Abilene Kid LE BB Gun
Minigun: CZ57 Avenger
Marksman Carbine: All-American
Pulse Gun
Bumper Sword: Blade of the East
.44 Magnum Revolver: Mysterious Magnum
Fat Man
.357 Magnum Revolver: Lucky
Combat Knife: Chance's Knife .
Missile Launcher: Annabelle
Zap Glove: Paladin Toaster
Sawed-Off Shotgun: Big Boomer
That Gun
Grenade Machine-gun: Mercy
Varmint Rifle: Ratslayer
Machete: Liberator
Cleaver: Chopper
Frag Grenade: Holy Frag Grenade
Fire Axe: Knock Knock
Sniper Rifle: Gobi Campaign Scout Rifle
DogTag Fist: Recompense of the Fallen
Hunting Shotgun: Dinner Bell
Tesla Cannon: Tesla-Beaton Prototype
. Legardeboy
The only one I can think of is the Sleepytyme, with the gun runners arsenal pack
by modding its not a real weapon in the vanilla version
You can't. Once you put it on it says on
Unique weapons cannot be modded like regular weapons. 'That Gun' is already a modded .223 pistol, you can't add any other weapon mods to it.
The unique gatling laser in Fallout New Vegas (The Sprtel-Wood 9700) can be purchased from the Gun Runners provided that you have the Gun Runner's Arsenal DLC.
There Mercy if you wanna blow things up , the holorifle is my personal favorite, there the euclides finder (Archimedes II) , and the tesla cannon prototype.
the dog you can apparently get.
project nevada
The best place is Las Vegas or New York.
In my opinion, Fallout 2.
All around best gun for me would be 'This Machine'.
Sadly you cannot get anymore ammo for the weapon anywhere else in tho mojave or surrounding areas :(