Blueprints & Rarity
Every vehicle and fitment is built from a blueprint, and every blueprint is reverse-engineered from an ancient artefact. The artefact's rarity decides what you can unlock — from Light hulls to Very-Heavy war machines.
How blueprints work
Originals (BPO)
Reverse-engineer an artefact to earn a Blueprint Original. Building from it debits the original but re-disperses it, so an original is effectively never consumed — and it can be copied.
Copies (BPC)
Copy an original to mass-produce single-use Blueprint Copies. Each build consumes one copy per item; copies cannot themselves be copied.
Reverse-engineering
Each attempt succeeds with probability 1/N (base N = 10 on mainnet). N grows ×4/3 for every blueprint of that type you already hold, so duplicates get exponentially harder to win.
Rarity here is the artefact tier required to unlock a blueprint — not a power level. There are no tech tiers; an unlocked blueprint always builds the same item. See artefacts & drop rates →

common blueprints
Light tier · unlocked by Ancient Artefact (common) · drop 1 / 20 from any ore

uncommon blueprints
Medium tier · unlocked by Ancient Artefact (uncommon) · drop 1 / 50 from raw c & rarer

rare blueprints
Heavy tier · unlocked by Ancient Artefact (rare) · drop 1 / 100 from raw f & rarer

ultra-rare blueprints
Very Heavy tier · unlocked by Ancient Artefact (ultra-rare) · drop 1 / 200 from raw h / i