Warframe mods have all sorts of drop locations that can range from overly complex to quite simple. For example, you may not know that the Nightmare missions offered under the Alerts tab of the game can give exclusive and useful mods like Hammer Shot, which increases Critical Damage and Status Chance. One such mod isn’t from Nightmare missions but can be a bit obscure to get regardless. Here’s how to get the Heavy Caliber mod in Warframe. Related: Secrets of Tusk Ballistas in Warframe
Where to Find the Heavy Caliber Mod in Warframe
The Heavy Caliber mod in Warframe is found through opening and looting Orokin Derelict vaults, with a 4.35% chance of the mod drop being Heavy Caliber. This means that when on average, you may need to open as many as 23 Orokin Derelict vaults to get the mod. Orokin Derelict vaults are found on the Orokin Derelict tileset, or every node on the planet Deimos excluding the Cambion Drift, Exequias, Magnacidium, and Hyf.
What You Need to Open Orokin Derelict Vaults and Get Heavy Caliber in Warframe
Before you go jumping into missions and opening vaults, there are a few things you’ll have to do first. First of all, you’ll need all four of the Dragon keys so you can have a key ready when you find a vault.