What are your favorite guns in the Fallout universe? Specifically, the ones in the main Fallout games and ones made by fans (either for fanfiction or mods)?

I think one of my favorite in-game weapons would be the Mysterious Magnum. Only playable in Fallout: New Vegas. It's just fun having that lovely sound and all, in my opinion. Plus .44 Magnums are pretty cool.

As for fan-made. The IF-88 'Ironpony' Combat Shotgun is pretty wicked. It's from the fanfiction "Fallout Equestria - Project Horizons". The main character, Blackjack, gets it in the 5th volume. This Combat Shotgun is very powerful. Hell, she first used it against three Cyber enemies, turning all three of them into basically a pile of scrap metal and blood very quickly without need to reload, giving me a good idea how strong it is. It's uses it's own shotgun ammo, which I believe is rare to find. However, since it's from a story there's no 'confirmed' look for it. However, there is two pictures I can share of it. One specifically is it for sure, the other is another possible look for it (though I'm only assuming since it doesn't look like any other weapons that Blackjack has used in the story. The IF-88 is the only weapon she ever had which fits the bill).

With that said. The first picture is a concept idea of what it might look like. http://fc04.deviantart.net/fs71/f/2014/310/9/6/if_88_ironpony_by_jasper77wang-d85g87l.png. Not a huge fan of this look myself as it doesn't have a shotgun feel. The http://fc08.deviantart.net/fs71/f/2013/066/3/0/run__shoot__kill____and_cry____by_rublegun-d5x9l82.png though of Blackjack using it, that looks fits more properly for it, in my opinion... I really do hope when this gun gets made for Fallout 3 and New Vegas (and it is btw), they make a good model similar to the second picture.

Anyways, what about you mates?