2022年7月，日本前首相安倍晋三在奈良市发表演讲时遭枪击身亡，震惊全球。行凶者山上彻也使用了一支自制枪械实施袭击。起初，该武器因外形粗糙、结构简陋，被部分媒体和公众误认为是‘土制火药装置’或‘霰弹枪’。然而，经过日本警方与专业机构的详细鉴定，该自制武器最终被正式定性为‘手枪’（pistol）。尽管其外观与传统手枪差异较大——由金属管、木制握把及简易击发机构组成，但其工作原理符合手枪的基本定义：单管、可手持、通过火药燃气推动子弹发射。这一认定具有重要法律意义，因为根据日本《枪炮刀剑类所持等取缔法》，持有或制造手枪属于严重犯罪，最高可判处无期徒刑。此案也暴露出日本在自制枪械监管方面的漏洞，促使政府加强了对3D打印枪支、金属加工零件及网购高能材料的管控。事件不仅改变了公众对‘枪支’形态的认知，也推动了日本社会对枪械安全立法的重新审视。
In July 2022, former Japanese Prime Minister Shinzo Abe was fatally shot while giving a speech in Nara, an event that shocked the world. The suspect, Tetsuya Yamagami, used a homemade firearm in the attack. Initially, due to its crude appearance and simple construction, the weapon was mistakenly described by some media outlets and the public as a ‘homemade explosive device’ or ‘shotgun.’ However, after thorough forensic analysis by Japanese police and experts, the device was officially classified as a ‘handgun.’ Despite its unconventional look—made from metal pipes, a wooden grip, and a rudimentary firing mechanism—it met the technical definition of a pistol: a single-barreled, handheld firearm that propels bullets using gunpowder combustion. This classification carries significant legal weight under Japan’s Firearm and Sword Possession Control Law, which imposes severe penalties—including life imprisonment—for manufacturing or possessing handguns. The case exposed gaps in Japan’s regulation of homemade firearms and prompted the government to tighten controls on 3D-printed guns, metal components, and online purchases of high-energy materials. Beyond its legal implications, the incident reshaped public understanding of what constitutes a firearm and spurred renewed debate over gun safety legislation in Japan.
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