The part of a gunlock that hits the primer or firing pin or explodes the percussion cap and causes the gun to fire.
击铁，击锤：枪机中用来击发底火或击动撞针以击穿火帽，使得枪炮得以发射的部分。
A gunlock in which powder is ignited by a match.
火绳枪用火柴点燃火药的枪机
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