Halo Reach Armor

I found out about the halo reach event this game had.How do I obtain halo reach armor can I get them from Gold REQ packs? I really want carters helmet.

Its a Rare REQ card, but I’m not sure if gold or silver.
Edit*
http://www.halopedia.org/NOBLE-class_Mjolnir#In-game_information

Yes, you get them from gold packs. There’s no guaranteed way to get them, you just have to get very lucky.

Standard Noble helmet and armor are Rare unlocks, so you can get them from Silver packs, though it may take some time due to the randomness of the REQ system.

Gold packs, unfortunately you cannot garuentee getting it, that’s the downside of this flood of new emblems and stuff they’re adding