One of the benefits by pre-ordering Borderlands 3, are the gold weapons pack. I really hope there is an option to turn them on/off. I never liked golden weapons ( thoughts go back to Far Cry 2 ), so if i am forced to use them by pre-ordering, then i would rather wait until the game is released and avoid them.
I think these are just weapon skins. If so they should only appear if you actually equip them.