Halo 5 mark vi armor

Games Halo 5: Guardians
1

I haven’t played halo in a couple months but when I stated it up today I noticed I had the mark vi gen one armor so any explanation to how I got it?

2

Do you have mcc if you do you get it

3

Mark VI [GEN1] is acquired through getting the achievement “Your Journey Begins” in Halo: The Master Chief Collection.

4

Ok thx