wazer wifle hahaha i love that thing

The Marksman Carbine is my favourite and the gun i mostly use,You can use it in most situations and its good to get some damage done from a distance.

The Mysterious Magnum. With Millenia retexture and all engravings it just looks beautiful, ammo is pretty common in wasteland and this gun can sure pack a punch. Once i obtain him from that Johny guitar guy it stay in my inventory till the end of game

I absolutely love the Survivalist's rifle from the Honest Hearts DLC.

got to be the survivalist rifle, it has high damage, good health, nice fire rate, and to be honest I hate automatic weapons, so a semi auto rifle like that one is a beauty

1. Gobi Campaign Scout Rifle
2. A Light Shining In Darkness
3. Dinner Bell

Every engagement I get into goes in that order

mine is the 44.magnum or the .357 revolver

I remember really loving the HoloRifle after I had fully upgraded it. I kinda used it as a Sniper Shotgun. I took out all the blind Deathclaws near the train cars....from a super long distance away. The spread pattern and damage over time effect made quick work of just about everything. It was bugged on the console as well...condition never degraded either.

My favorite vanilla weapon is A Light Shining in Darkness, the weapon just looks so cool with its custom designs and plus i am fan of the real life M1911.

Since everyone is mentioning their DLC weapons, I will put mine as well, in no particular order:
Automatic rifle
Holorifle
Destabilizer
Rail gun(Gauss rifle from F3)
Shocksword
All those sweet unbreakable winterized weapons
Heavy incinerator(F3)
Beta tesla cannon that you can get via glitch in F3
Dismemberer
Backwater rifle
Shock Baton
Light shining in darkness
Police pistol
Red glare
Satchel charges
Gas bombs
All cosmic weapons(love the idea)
Katana
Bozar
Embrace of the mantis king

So basically all my most favorite, must have weapons are in DLCs. I can never get why anyone would ever skip on these, just for weapons alone.

F3-Jeingwies shock sword
FNV-Brush Gun

- A Light Shining in The Darkness: It's iconic, it's compact, it packs a punch

- Lever-Action Shotgun: Looks good, ends lives even better

- Nuka-Breaker: It's brutal, it's iconic and it looks really good in a wastelandy scrap kind of weird way

- Fat Man: I mean, come on. This thing is shoulder-sized nuclear genocide, what's not to love?

F3 - Paulsons Revolver
FNV - Mysterious Magnum and Medicine Stick

for Fallout 3 i really loved the combat shotgun, chinese assault rifle and sniper rifle combo. combat shot gun for the close range/ indoor stuff, and used the chinese assault rifle for the mid ranged/ambush stuff and the sniper rifle to pick people off from a distance.

in new vegas i tend to use the lever action shotgun, marksmans rifle and the sniper rifle.

i also tend to keep a pistol too for picking of radroaches and rats or shooting traps to set them off. normally i'll just use what ever pistol i have that does the most damage though incase i'm in a casino.

Cowboy Repeater: i can get it early in the game and Lever action rifles are a lot more fun to handle

Automatic rifle: fun to use when going to to toe against deathclaws

Lever action shotgun: feel like the terminator in the wasteland

.357 magnum revolver: I love slow reload really makes me think before i shoot

This Machine: An unmarked quest for a rifle... It was worth is... for a while


Fat Man: Mini-Nukes enough said


Lucky


A Light Shining In Darkness

I've always loved the .44 magnum. The scope less one is definitely the best and it just looks so amazing. It sounds really good and packs a punch!

Dinner Bell was the one for me, with the hunting rifle for long distance. It was a great combo. They weren't exactly fast shooters but they did some pretty good damage and were fun to use.

love mowing people down with the light machine gun

My favorite is the hunting rifle for both Fallout 3 and Fallout New Vegas.