this one was the official statement in unlocked and loaded:
Terminology and Weapon Name Updates and Corrections
As a part of this update, we have made some updates and corrections to some existing weapons and talents. These changes were made to facilitate the Itemization overhaul and the way it categorises things. (Note: The inspect texts for some weapons might still refer to them as their old name. We’re correcting these in a hotfix.) Here is a comprehensive list (though we honestly might’ve missed a couple, so this might be updated with your help):