{"id":97116,"date":"2026-01-05T02:00:35","date_gmt":"2026-01-05T07:00:35","guid":{"rendered":"https:\/\/quotulatiousness.ca\/blog\/?p=97116"},"modified":"2025-09-18T16:11:02","modified_gmt":"2025-09-18T20:11:02","slug":"interdynamic-mp-9-smg-origin-of-the-tec-9","status":"publish","type":"post","link":"https:\/\/quotulatiousness.ca\/blog\/2026\/01\/05\/interdynamic-mp-9-smg-origin-of-the-tec-9\/","title":{"rendered":"Interdynamic MP-9 SMG: Origin of the TEC-9"},"content":{"rendered":"<p align=\"center\"><iframe loading=\"lazy\" width=\"854\" height=\"480\" src=\"https:\/\/www.youtube.com\/embed\/2_6EtJVG-PY?si=6RG8Dyctv6Fz2q6I\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<blockquote><p><strong>Forgotten Weapons<\/strong><br \/>\nPublished 13 Aug 2025<\/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.<br \/>\n<!--more--><\/p>\n<p>The best firearms reference books: <a href=\"https:\/\/www.headstamppublishing.com\" target=\"_blank\">https:\/\/www.headstamppublishing.com<\/a><\/p>\n<p>All the best firearms history channels streaming to all major devices! Join today and get a week free:<br \/>\nweaponsandwar.tv<\/p>\n<p><a href=\"https:\/\/www.youtube.com\/redirect?event=video_description&#038;redir_token=QUFFLUhqbUdtcHJuVTc0MW11S2pTVWRod0NZWlhTc3FXd3xBQ3Jtc0ttT2tTOHh4el9XWXR6RVRmWV8yVEFzZjlWNG1ockdtQVdZNkJXdUd4eHoyS0dfUzJhRmJzV0FmSzdDajM4ZUxEcVZjMXpFMUFHT1lYT1RJTmpYUTJGdTBpb2QyaFVuSEgwYmlkSWhOTEVmTTlhMlNMaw&#038;q=http%3A%2F%2Fwww.floatplane.com%2Fchannel%2FForgottenWeapons&#038;v=2_6EtJVG-PY\" target=\"_blank\">http:\/\/www.floatplane.com\/channel\/For&#8230;<\/a><\/p>\n<p>Cool Forgotten Weapons merch! <a href=\"http:\/\/shop.forgottenweapons.com\" target=\"_blank\">http:\/\/shop.forgottenweapons.com<\/a><\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Forgotten Weapons Published 13 Aug 2025 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 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[62,7,13,663],"tags":[930,140,1366,49,1264,283],"class_list":["post-97116","post","type-post","status-publish","format-standard","hentry","category-europe","category-history","category-usa","category-weapons","tag-1980s","tag-design","tag-forgottenweapons","tag-guns","tag-submachineguns","tag-sweden"],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p2hpV6-pgo","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/97116","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/comments?post=97116"}],"version-history":[{"count":1,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/97116\/revisions"}],"predecessor-version":[{"id":97117,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/97116\/revisions\/97117"}],"wp:attachment":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/media?parent=97116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/categories?post=97116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/tags?post=97116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}