Regulations Governing Permission and Management of Homemade Hunting Guns and Spear Guns of Indigenous Peoples and Fishermen Article 17

An indigenous person or fisherman who has been granted permission to make a homemade spear gun shall have finished making the gun within one month following the day when a notification is received that says the permission has been granted pursuant to paragraph 1, Article 9, and shall submit the gun to the municipal or county (city) police department whose jurisdiction covers the storage place to apply for an inspection, branded serial number, and registration.If, for some reason, the gun cannot be made within the time limit specified in the preceding paragraph, a written application may be submitted to the police department of the municipal or county (city) government whose jurisdiction covers the storage place for a one-time extension. The period extended to make the gun shall not exceed one month.
中文原文 原住民漁民自製獵槍魚槍許可及管理辦法第17條
經許可製造自製魚槍之原住民、漁民,應於收受第九條第一項許可通知之翌日起一個月內完成製造,並持向保管地之直轄市、縣(市)政府警察局申請查驗、烙碼及列冊管理。
因故無法依前項規定於期限內完成製造者,得以書面向保管地之直轄市、縣(市)政府警察局申請延長製造期限一次,其延長期間不得逾一個月。

English translation for reference only; the Chinese text prevails. Not legal advice.