Examples? If you dislike any particular mod and think it has useless equipment, please join the discussion on its thread - vague truisms aren't really constructive :3
Sorry, but I can't recall any specific mods right now, I haven't played in a while and my memory is a little foggy. I do remember reading through the modlist, and seeing an uzi and other light SMGs and three different assault rifles and a light machine gun and reading their stats, and though they were all a little different, they all had the same basic function as the standard rifle. They were also all made obsolete early on in the game - even the laser pistol was better.
Of course, this isn't all on the mod makers - it's just as much on the player for keeping so much clutter around.