引用・参考文献 https://www.cia.gov/library/abbottabad-compound/3A/3AC462D933EE22F4D8B4D32E19DDCF11_AC%20130%20research.pdfhttps://meggittdefense.com/wp-content/uploads/2020/05/AC130U_Gunship.pdfhttp://www.navweaps.com/Weapons/WNUS_4cm-56_mk12.php
http://www.nicovideo.jp/watch/sm45602879
