I'm running all over the place trying to find a weapons merchant. I know there is the Silver Rush. However, they only sell energy weapons. I'm looking for a merchant that sells guns. I need something more powerful than the service rifle I'm carrying right now.

try gun runners south of the strip

BY FAR the best merchant in the game for guns and mods.

There a store in Freeside (a little town near the Strip) that is run by two people, one deals in general goods while Mic (i think thats he's name) deals in guns, ammos, and mods.

i want to enlist these gun runners make my own faction and pwn the wasteland.....maybe ill just be a bamf and buy some of there stock MUHAWHAWHAW!!!!