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击针(英语:firing pin,又译撞针),如果自带弹簧机构不需要击锤(hammer)提供冲力则称为击铁(英语:striker),通常指的是现代枪械枪机中用以撞击子弹底火引燃发射药、从而产生高压膨胀气体来发射弹头的一个结构零件。此结构为现代枪械非常重要的一部分,通常有保险结构,用以防止子弹误射。击针亦被采用于手榴弹火炮[1][2]

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