Why arent my mkII weapons leveling up?

Call of Duty Black Ops 4 Xbox One

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i just got the swat rft mkII and the daemon 3xb mkII but no mater what i do they wont level up. I cant unlock any attachments.

Samuelgold
Likes: 1
Posts: 1
Registered: ‎05-05-2015
1 REPLY 1

same thing is happening to me

Mister_moxie
Likes: 0
Posts: 1
Registered: 2 weeks ago

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