{"id":292,"date":"2022-09-29T08:20:36","date_gmt":"2022-09-29T08:20:36","guid":{"rendered":"https:\/\/viking-armory.com\/?p=292"},"modified":"2023-12-08T12:48:55","modified_gmt":"2023-12-08T12:48:55","slug":"ar15-buffer-spring-measurement-jig","status":"publish","type":"post","link":"https:\/\/viking-armory.com\/?p=292","title":{"rendered":"AR15 Buffer Spring Measurement Jig"},"content":{"rendered":"<p>REF: Army TM 9-1005-319-23&amp;P Nov 2008, Page 0021-10:<\/p>\n<p>Check free length of action spring. RIFLE ONLY: The free length must be between 11 3\/4 in. (29.85cm) minimum and 13 1\/2 in. (34.29 cm) maximum. CARBINE ONLY: The free length must be between 10 1\/16 in. (25.56 cm) minimum and 11 1\/4 in. (28.58 cm) maximum. If measurements are notaccurate, replace. Do not attempt to adjust the length by stretching the action spring.<\/p>\n<p>Your manufacture might be different, in making the jig I used the above.<\/p>\n<p>If you have a 3D printer it is a cheap print. This is too long for a standard print bed, I used my Ender Extended 400&#215;400 print surface for this one.<\/p>\n<p>You can download the STL on Thiniverse<\/p>\n<p>To help check the length of your buffer spring I created 2 versions of the AR15 Buffer Spring Measurement Jig; Rifle and Carbine length. The Center is minimum length and the other is maximum length. Your printer might be different so double check measurements after printing.<\/p>\n<figure id=\"attachment_294\" aria-describedby=\"caption-attachment-294\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-06.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-294 size-full\" src=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-06.jpg\" alt=\"AR15 Buffer Spring Measurement Jig 01\" width=\"800\" height=\"533\" srcset=\"https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-06.jpg 800w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-06-300x200.jpg 300w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-06-768x512.jpg 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-294\" class=\"wp-caption-text\">AR15 Buffer Spring Measurement Jig 01<\/figcaption><\/figure>\n<figure id=\"attachment_295\" aria-describedby=\"caption-attachment-295\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-08.jpg\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-295 size-full\" src=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-08.jpg\" alt=\"AR15 Buffer Spring Measurement Jig 02\" width=\"800\" height=\"533\" srcset=\"https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-08.jpg 800w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-08-300x200.jpg 300w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-08-768x512.jpg 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-295\" class=\"wp-caption-text\">AR15 Buffer Spring Measurement Jig 02<\/figcaption><\/figure>\n<p>With Rifle Spring:<\/p>\n<figure id=\"attachment_296\" aria-describedby=\"caption-attachment-296\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-10.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-296\" src=\"http:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-10.jpg\" alt=\"AR15 Buffer Spring Measurement Jig 03\" width=\"800\" height=\"533\" srcset=\"https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-10.jpg 800w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-10-300x200.jpg 300w, https:\/\/viking-armory.com\/wp-content\/uploads\/2022\/07\/Buffer-Spring-10-768x512.jpg 768w\" sizes=\"auto, (max-width: 709px) 85vw, (max-width: 909px) 67vw, (max-width: 984px) 61vw, (max-width: 1362px) 45vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-296\" class=\"wp-caption-text\">AR15 Buffer Spring Measurement Jig 03<\/figcaption><\/figure>\n<h3>Hit us up with <a href=\"https:\/\/viking-armory.com\/?page_id=209\" target=\"_blank\" rel=\"noopener\">comments<\/a> or <a href=\"https:\/\/viking-armory.com\/?page_id=209\" target=\"_blank\" rel=\"noopener\">questions<\/a><\/h3>\n<p>All Documents posted on this site are for informational use only. If you make ANY modifications to your Weapons based on this site, you do at your own risk! If done incorrectly, you can render you weapon unsafe and \/ or unusable.<\/p>\n<p><a name=\"sample-permalink\"><\/a> More HERE: <a href=\"https:\/\/viking-armory.com\/?page_id=723\">https:\/\/viking-armory.com\/?page_id=723<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>REF: Army TM 9-1005-319-23&amp;P Nov 2008, Page 0021-10: Check free length of action spring. RIFLE ONLY: The free length must be between 11 3\/4 in. (29.85cm) minimum and 13 1\/2 in. (34.29 cm) maximum. CARBINE ONLY: The free length must be between 10 1\/16 in. (25.56 cm) minimum and 11 1\/4 in. (28.58 cm) maximum. &hellip; <a href=\"https:\/\/viking-armory.com\/?p=292\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;AR15 Buffer Spring Measurement Jig&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[39,5,53],"tags":[49,9,8,59,33],"class_list":["post-292","post","type-post","status-publish","format-standard","hentry","category-3d-printing","category-ar-15-ar15-ar-15","category-armor","tag-3d-printing","tag-ar-15","tag-ar15","tag-gunsmith","tag-reference"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/posts\/292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/viking-armory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=292"}],"version-history":[{"count":5,"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/posts\/292\/revisions"}],"predecessor-version":[{"id":778,"href":"https:\/\/viking-armory.com\/index.php?rest_route=\/wp\/v2\/posts\/292\/revisions\/778"}],"wp:attachment":[{"href":"https:\/\/viking-armory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/viking-armory.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/viking-armory.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}