Edit Most Mastery-rewarding items can be directly bought, built, or researched. However the following items had a limited distribution period or were removed from circulation entirely. Acquisition: Events or Special Alerts These items were once available from the Market but have since been removed. They cannot be traded, but may rarely appear as rewards for Events or Tactical Alerts. Item Count Mastery  Snipetron Primary 3,000 Total: 1 3,000 Acquisition: None These items were part of the Founders Program, rewarding those who donated during the crucial early stages of the game. They cannot be traded and will never be offered again. Acquisition: Wolf Beacon and Nightwave Offerings  Wolf Sledge is only obtainable by killing the Wolf of Saturn Six. He spawned during the Nightwave/Series 1 and can now only spawn with a Wolf Beacon.  Vitrica is only obtainable by killing Nihil after purchasing the Nihil's Oubliette decoration and the Enter Nihil's Oubliette Key. Acquisition: Events, Special Alerts, or Celebrations These items can appear as rewards for Events, Tactical Alerts, or celebratory periods. Their parts and/or blueprints can be traded except for all Dex Weapons, both Plague Zaw Strikes, and the  Opticor Vandal. Item Count Mastery  Gorgon Wraith Primary 3,000  Imperator Vandal Arch-Gun 3,000  Dex Furis Secondary 3,000  Dex Dakra Melee 3,000  Dex Sybaris Primary 3,000  Plague Keewar Zaw Strike 3,000  Plague Kripath Zaw Strike 3,000  Opticor Vandal* Primary 3,000  Basmu Primary 3,000  Ceti Lacera Melee 3,000 Total: 10 30,000 * Opticor Vandal can also be purchased from Baro Ki'Teer, which has the only tradeable versionAcquisition: Purchase or Trade These items can occasionally appear with Baro Ki'Teer's merchandise. Unranked weapons can be traded. Item Count Mastery  Mara Detron Secondary 3,000  Prisma Gorgon Primary 3,000  Prisma Lenz Primary 3,000  Prisma Veritux Arch-Melee 3,000  Prisma Skana Melee 3,000  Prisma Ohma Melee 3,000  Prisma Grakata Primary 3,000  Prisma Dual Cleavers Melee 3,000  Prova Vandal Melee 3,000  Machete Wraith Melee 3,000  Prisma Tetra Primary 3,000  Prisma Shade Companion 6,000  Prisma Burst Laser* Robotic Weapon 3,000  Quanta Vandal Primary 3,000  Aklex Prime‡ Secondary 3,000  Vulkar Wraith Primary 3,000  Prisma Obex Melee 3,000  Prisma Angstrum Secondary 3,000  Viper Wraith Secondary 3,000  Supra Vandal Primary 3,000  Prisma Twin Gremlins Secondary 3,000  Akvasto Prime‡ Secondary 3,000  Prisma Grinlok Primary 3,000  Zylok Secondary 3,000  Glaxion Vandal Primary 3,000  Prisma Dual Decurions Arch-Gun 3,000  Halikar Wraith Melee 3,000  Prisma Machete Melee 3,000  Vastilok Melee 3,000  Vericres Melee 3,000 Total: 30 93,000 * Prisma Burst Laser is included with Prisma Shade when purchased from Baro, but the items are separate when traded with other players. ‡ Aklex Prime and Akvasto Prime cannot be purchased directly. Aklex Prime parts can be obtained through Axi A2 Relics, and Akvasto Prime parts can be obtained through Axi A5 Relics, both of which are exclusively sold by Baro Ki'Teer.Acquisition: Daily Tribute system These weapons are available from the daily tribute system at milestones 100, 300, 500 & 700 * Sigma & Octantis will only be available from Day 300Acquisition: Legacy Relics, Trade, or Prime Vault Access Relics containing their parts have been placed in the Prime Vault, no longer appearing in drop tables. However their parts and relics can be traded or used normally. These items are available on a random rotating schedule through the Prime Resurgence system. Item Count Mastery  Frost Prime Warframe 6,000  Latron Prime Primary 3,000  Reaper Prime Melee 3,000  Mag Prime Warframe 6,000  Boar Prime Primary 3,000  Dakra Prime Melee 3,000  Ember Prime Warframe 6,000  Sicarus Prime Secondary 3,000  Glaive Prime Melee 3,000  Rhino Prime Warframe 6,000  Boltor Prime Primary 3,000  Ankyros Prime Melee 3,000  Loki Prime Warframe 6,000  Bo Prime Melee 3,000  Wyrm Prime Companion 6,000  Prime Laser Rifle* Sentinel Weapon 3,000  Nova Prime Warframe 6,000  Soma Prime Primary 3,000  Vasto Prime Secondary 3,000  Volt Prime Warframe 6,000  Odonata Prime Archwing 6,000  Ash Prime Warframe 6,000  Vectis Prime Primary 3,000  Carrier Prime Companion 6,000  Sweeper Prime† Sentinel Weapon 3,000  Trinity Prime Warframe 6,000  Dual Kamas Prime Melee 3,000  Vauban Prime Warframe 6,000  Akstiletto Prime Secondary 3,000  Fragor Prime Melee 3,000  Nekros Prime Warframe 6,000  Tigris Prime Primary 3,000  Galatine Prime Melee 3,000  Banshee Prime Warframe 6,000  Euphona Prime Secondary 3,000  Helios Prime Companion 6,000  Deconstructor Prime‡ Sentinel Weapon 3,000  Oberon Prime Warframe 6,000  Sybaris Prime Primary 3,000  Silva & Aegis Prime Melee 3,000  Hydroid Prime Warframe 6,000  Ballistica Prime Secondary 3,000  Nami Skyla Prime Melee 3,000  Mirage Prime Warframe 6,000  Akbolto Prime Secondary 3,000  Kogake Prime Melee 3,000  Zephyr Prime Warframe 6,000  Tiberon Prime Primary 3,000  Kronen Prime Melee 3,000  Limbo Prime Warframe 6,000  Pyrana Prime Secondary 3,000  Destreza Prime Melee 3,000  Chroma Prime Warframe 6,000  Rubico Prime Primary 3,000  Gram Prime Melee 3,000  Mesa Prime Warframe 6,000  Akjagara Prime Secondary 3,000  Redeemer Prime Melee 3,000  Equinox Prime Warframe 6,000  Stradavar Prime Primary 3,000  Tipedo Prime Melee 3,000  Wukong Prime Warframe 6,000  Zhuge Prime Primary 3,000  Ninkondi Prime Melee 3,000  Atlas Prime Warframe 6,000  Tekko Prime Melee 3,000  Dethcube Prime Companion 6,000  Deth Machine Rifle Prime§ Sentinel Weapon 3,000  Ivara Prime Warframe 6,000  Baza Prime Primary 3,000  Aksomati Prime Secondary 3,000  Titania Prime Warframe 6,000  Corinth Prime Primary 3,000  Pangolin Prime Melee 3,000  Inaros Prime Warframe 6,000  Panthera Prime Primary 3,000  Karyst Prime Melee 3,000  Nezha Prime Warframe 6,000  Zakti Prime Secondary 3,000  Guandao Prime Melee 3,000 Total: 80 333,000 * Prime Laser Rifle is included with Wyrm Prime and cannot be obtained separately. † Sweeper Prime is included with Carrier Prime and cannot be obtained separately. ‡ Deconstructor Prime is included with Helios Prime and cannot be obtained separately. § Deth Machine Rifle Prime is included with Dethcube Prime and cannot be obtained separately.