{"id":27576,"date":"2025-08-13T07:55:56","date_gmt":"2025-08-13T12:55:56","guid":{"rendered":"https:\/\/surplused.com\/index.php\/2025\/08\/13\/interdynamic-mp-9-smg-origin-of-the-tec-9-2\/"},"modified":"2025-08-13T07:55:56","modified_gmt":"2025-08-13T12:55:56","slug":"interdynamic-mp-9-smg-origin-of-the-tec-9-2","status":"publish","type":"post","link":"https:\/\/surplused.com\/index.php\/2025\/08\/13\/interdynamic-mp-9-smg-origin-of-the-tec-9-2\/","title":{"rendered":"Interdynamic MP-9 SMG: Origin of the TEC-9"},"content":{"rendered":"<div class=\"mejs-video-container\"><iframe loading=\"lazy\" allow=\"autoplay\" width=\"580\" height=\"380\" src=\"https:\/\/www.youtube.com\/embed\/2_6EtJVG-PY?controls=1\" frameborder=\"0\" allowfullscreen><\/iframe><\/div>\n<p>All the best firearms history channels streaming to all major devices! Join today and get a week free:<br \/>weaponsandwar.tv<\/p>\n<p>The story of the Tec-9 begins with a Swedish company called Interdynamic AB and their designer G\u00f6ran Lars Magnus Kjellgren designing a cheap and simple submachine gun for military use. It found no interested clients, and so the company decided to market it in the United States as a semiautomatic pistol. Kjellgren moved to the US in 1979, anglicized his name to George Kellgren, and founded Interdynamic USA with a partner, Carlos Garcia. <\/p>\n<p>The pair produced a few dozen MP-9 submachine guns in 1982 (they were all transferrable, as this was before 1986) as well as a semiauto open bolt version called the KG-9 (Kellgren-Garcia). About 2500 of the KG-9s were made before later in 1982 the ATF determined that it was a machine gun, and they had to redesign it as a closed bolt semiauto, which they named the KG-99. At about this point Kellgren decided to move on to other plans, and he sold his interest in the company to Garcia, who formed a new company called Intratec. Kellgren used the proceeds to start Grendel a few years later.<\/p>\n<p>The best firearms reference books: <a href=\"https:\/\/www.headstamppublishing.com\" target=\"_blank\">https:\/\/www.headstamppublishing.com<\/a><\/p>\n<p><a href=\"http:\/\/www.patreon.com\/ForgottenWeapons\" target=\"_blank\">http:\/\/www.patreon.com\/ForgottenWeapons<\/a><br \/><a href=\"http:\/\/www.floatplane.com\/channel\/ForgottenWeapons\" target=\"_blank\">http:\/\/www.floatplane.com\/channel\/ForgottenWeapons<\/a><\/p>\n<p>Cool Forgotten Weapons merch! <a href=\"http:\/\/shop.forgottenweapons.com\" target=\"_blank\">http:\/\/shop.forgottenweapons.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>All the best firearms history channels streaming to all major devices! Join today and get a week free:weaponsandwar.tv The story of the Tec-9 begins with a Swedish company called Interdynamic AB and their designer G\u00f6ran Lars Magnus Kjellgren designing a cheap and simple submachine gun for military use. It found no interested clients, and so&hellip;&nbsp;<a href=\"https:\/\/surplused.com\/index.php\/2025\/08\/13\/interdynamic-mp-9-smg-origin-of-the-tec-9-2\/\" rel=\"bookmark\">Read More &raquo;<span class=\"screen-reader-text\">Interdynamic MP-9 SMG: Origin of the TEC-9<\/span><\/a><\/p>\n","protected":false},"author":12,"featured_media":27577,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[89,19],"tags":[],"class_list":["post-27576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-content","category-video"],"_links":{"self":[{"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/posts\/27576","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/comments?post=27576"}],"version-history":[{"count":0,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/posts\/27576\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/media\/27577"}],"wp:attachment":[{"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/media?parent=27576"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/categories?post=27576"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/surplused.com\/index.php\/wp-json\/wp\/v2\/tags?post=27576"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}