How many HCS Packs do I need?

Games Halo 5: Guardians
1

I’ve already got the HCS pack once, so I’ve got the magnum and AR skins, but I’m wondering if I need to get it again for the BR skins, and how many more I’ll need to buy.

2

I think you’ll need to buy 3 HCS packs to get the whole collection if I recall.