The Iron Curtain is a Weapon Blueprint available in Call of Duty: Black Ops Cold War and Call of Duty: Warzone.
It is an Epic blueprint variant of the base weapon AK-47, one of the Assault Rifles featured in Call of Duty.
The Iron Curtain blueprint was released at Game Launch as part of the Bundle Confrontation Weapons Pack, received by pre-ordering any digital edition of Call of Duty: Black Ops Cold War.
Iron Curtain - AK-47 - Blueprint Attachments:
Here are the attachments for the Iron Curtain Blueprint featured in Call of Duty: Black Ops Cold War and Call of Duty: Warzone.
You can build your own Iron Curtain weapon Blueprint by adding these attachments on a base AK-47 in the Gunsmith menu.