etymology - Bust a cap meaning and derivation - English Language

I've always believed that the phrase "bust a cap in yo ass" was AAVE for: To shoot an individual with a gun. Whilst trying to figure out what the cap actually meant, I ran into this alternate

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meaning - What did pop a cap mean, other than shoot someone

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What does 'busting a cap' mean, and where does it originate from? - Quora