BB manufacturers learned decades ago that they need to plate steel BBs with another metal to prevent them from rusting. Most used zinc or copper plating.
Air Venturi BBs are plated with zinc, but they have an even, thick and solid surface without gaps or breaks to prevent rust from forming.

By using Air Venturi BBs, you won't have use up your BBs within a short period of time. You can store them without worrying that they'll be useless when you need them. You won't waste money on ammo that has to be thrown out within weeks or even days of arriving.
Air Venturi BBs -- they're made to higher specs so you don't waste money!

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