How do I recieve CS:GO Halo mcc music kit?

Games Other Halo
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How do I get that music kit? I already own halo mcc and played 12 hours on it. And nothing. What should I do? Maybe i will refund the game? I bought it from steam obv

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> 2535445630621687;1:
> How do I get that music kit? I already own halo mcc and played 12 hours on it. And nothing. What should I do? Maybe i will refund the game? I bought it from steam obv

I wonder if that was a promotional that ended. May have needed more hours in the game, maybe try CSGO support? lol or Steam.