I’m not sure if you’re still able to get the blast BR skin for Halo 4 on mcc. It is not in the season challenges anymore, So it makes me unsure. I’ve already spent a while trying to get to rank 25. By reaching rank 25 in squad slayer you get the blast skin. I’m currently rank 22 right now, So 3 more levels, But going up 1 rank can take up to winning 3-5 matches. Are you still able to get it ?
No, that was a limited time challenge. You will be able to buy it in the exchange though whenever it shows up there
-Yoink- me 
.
> 2535451823110849;3:
> -Yoink- me .
Don’t do that to yourself.
Next season has some H4 unlocks, so it’s very much possible the skin will make an appearance in The Exchange. I’m looking forward to it as well. The Blast skin is very cool.