Search:

Gunzerker class mods.
Beast
BL2(BwAAAAApYgATDXihAxEyGQXBAUEAwf///////////78EgRgBAME=)

Berserker
BL2(BwAAAACeggAqDXihAxEyGQXBAUEAwf///////////78EgRgBAME=)

Devastator...

I was adding on to your post, when you said you should back up your save, of course, you should, but it is not necessary to, as long as you put the items back in the bank, and also trying to confirm...

As long as you put it in bank you should be fine, or equip it from what I've tested

Put GD_Weap_Pistol.Barrel.Pistol_Barrel_Vladof_Infinity in the Barrel portion.

Great news! This what Ruby said in another forum, on how to make any gun combination stick ( for example, Infinity Conference Call )
Rubyredsquirt
"The secret is when you are mix and matching...