I've gotten a murdering gub, 2 fire bees (1 homing &1 longbow), & a legendary gunzerker mod out of him this week. All I want is a damnable legendary hunter from him though, & he just won't give it up. I got 4 legendary siren mods & 3 fabled tortoises out of him last week. :(
So yeah, I'm definitely seeing very few guns drop from him, but I'm just gonna chalk it up to bad luck. --- Some people are like slinkies; not really good for anything, but they do bring a smile to your face when they're pushed down the stairs.