Champion, Veteran, Elite, Professional items

[Foofoo14]

I have a feeling that these are legacy items that can no longer be unlocked. If you look at their rank reward tiers, none of those things are unlocked anymore unless you did it years ago during the nexon days.

[ziomek53]

I saw were removed items of ranks type :

-M16a3 - Professional, Veteran, Elite, Champion
-M92fs - Professional, Veteran, Elite, Champion
-M9 knife - Professional, Veteran, Elite, Champion
-Backpack - Professional, Veteran, Elite, Champion
-Cap - Professional, Veteran, Elite, Champion

Where it disappear? I need only knife pistol and m16a3 to complete my set of champion but I'm GoA