There are several. There is the Tesla-Beaton Prototype, the Mysterious Magnum, The YCS/186 gauss rifle, the Pulse gun, Euclids C-finder and many more. They are my preferable selection of weapons.
You will find the blueprints to several unique weapons in various places. You can assemble the weapons at a workbench.
Yes. :)
no
Fallout New Vegas is a role playing game.There are several powerful weapons available to find or to buy.The Sniper Rifle is one of the better weapons.
Yes, you can use weapons from Fallout New Vegas DLCs in the base game.
Gun Runner's Arsenal.
yep. If you drop them in certain areas or leave them in non house based containers they might not be there once you return!
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.
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.
Occasionally Fallout: New Vegas will freeze, but not as frequently as Fallout 3.
fallout: new vegas 2 I've heard.
Fallout: New Vegas