{"id":7600,"date":"2026-08-08T02:40:39","date_gmt":"2026-08-08T02:40:39","guid":{"rendered":"https:\/\/flatsquare.in\/?post_type=download&p=7600"},"modified":"2026-08-08T02:40:43","modified_gmt":"2026-08-08T02:40:43","slug":"usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol","status":"publish","type":"download","link":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/","title":{"rendered":"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol"},"content":{"rendered":"\n

The USFA ZiP .22 LR is recognized as one of the most unconventional designs in modern firearms history. Originally released in 2013, this bullpup-configuration pistol gained notoriety for its futuristic, boxy aesthetic and its departure from traditional ergonomic standards. It was designed as a modular system that could theoretically be expanded with various rails and stocks, or even mounted as an under-barrel attachment for rifles.<\/p>\n\n\n\n

Chassis Geometry<\/strong>: The design features a polymer frame with a distinct dual-finger loop system and a flat rear plate instead of a traditional pistol grip.<\/p>\n\n\n\n

Mechanical Layout<\/strong>: Unlike most semi-automatic pistols with a sliding top, the ZiP .22 utilized two internal charging rods located above the muzzle for cycling the action and resetting the striker.<\/p>\n\n\n\n

Historical Preservation<\/strong>: Documenting the unique internal geometry and design choices of a defunct production firearm.

Mechanical Analysis<\/strong>: Studying the complexities of modular receiver systems and the challenges of bullpup handgun ergonomics.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

The USFA ZiP .22 LR is recognized as one of the most unconventional designs in modern firearms history. Originally released in 2013, this bullpup-configuration pistol gained notoriety for its futuristic, boxy aesthetic and its departure from traditional ergonomic standards. It was designed as a modular system that could theoretically be expanded with various rails and […]<\/p>\n","protected":false},"author":1,"featured_media":7607,"template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"edd_variable_prices":[],"_edd_bundled_products":[],"_edd_button_behavior":[],"footnotes":""},"edd-categories":[13,16],"edd-tags":[],"class_list":["post-7600","download","type-download","status-publish","has-post-thumbnail","hentry","download_category-3d-printable-files","download_category-tested-3d-print","edd-download","edd-download-cat-3d-printable-files","edd-download-cat-tested-3d-print"],"yoast_head":"\nUSFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -\" \/>\n<meta property=\"og:description\" content=\"The USFA ZiP .22 LR is recognized as one of the most unconventional designs in modern firearms history. Originally released in 2013, this bullpup-configuration pistol gained notoriety for its futuristic, boxy aesthetic and its departure from traditional ergonomic standards. It was designed as a modular system that could theoretically be expanded with various rails and […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ashish.kadakkal\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-08T02:40:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/flatsquare.in\/wp-content\/uploads\/edd\/2026\/08\/zipgun-usfa-22lr-3d-printed-7.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1920\" \/>\n\t<meta property=\"og:image:height\" content=\"1080\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/\",\"url\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/\",\"name\":\"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/flatsquare.in\\\/wp-content\\\/uploads\\\/edd\\\/2026\\\/08\\\/zipgun-usfa-22lr-3d-printed-7.jpg\",\"datePublished\":\"2026-08-08T02:40:39+00:00\",\"dateModified\":\"2026-08-08T02:40:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/#primaryimage\",\"url\":\"https:\\\/\\\/flatsquare.in\\\/wp-content\\\/uploads\\\/edd\\\/2026\\\/08\\\/zipgun-usfa-22lr-3d-printed-7.jpg\",\"contentUrl\":\"https:\\\/\\\/flatsquare.in\\\/wp-content\\\/uploads\\\/edd\\\/2026\\\/08\\\/zipgun-usfa-22lr-3d-printed-7.jpg\",\"width\":1920,\"height\":1080},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/flatsquare.in\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Downloads\",\"item\":\"https:\\\/\\\/flatsquare.in\\\/index.php\\\/downloads\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#website\",\"url\":\"https:\\\/\\\/flatsquare.in\\\/\",\"name\":\"www.flatsquare.in\",\"description\":\"Printed From Imagination\",\"publisher\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/flatsquare.in\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#organization\",\"name\":\"3d printing models\",\"url\":\"https:\\\/\\\/flatsquare.in\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/flatsquare.in\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/cropped-VVVVVVVVBVB.png\",\"contentUrl\":\"https:\\\/\\\/flatsquare.in\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/cropped-VVVVVVVVBVB.png\",\"width\":785,\"height\":105,\"caption\":\"3d printing models\"},\"image\":{\"@id\":\"https:\\\/\\\/flatsquare.in\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/ashish.kadakkal\\\/\",\"https:\\\/\\\/www.instagram.com\\\/_flatsquare.in\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/","og_locale":"en_US","og_type":"article","og_title":"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -","og_description":"The USFA ZiP .22 LR is recognized as one of the most unconventional designs in modern firearms history. Originally released in 2013, this bullpup-configuration pistol gained notoriety for its futuristic, boxy aesthetic and its departure from traditional ergonomic standards. It was designed as a modular system that could theoretically be expanded with various rails and […]","og_url":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/","article_publisher":"https:\/\/www.facebook.com\/ashish.kadakkal\/","article_modified_time":"2026-08-08T02:40:43+00:00","og_image":[{"width":1920,"height":1080,"url":"https:\/\/flatsquare.in\/wp-content\/uploads\/edd\/2026\/08\/zipgun-usfa-22lr-3d-printed-7.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/","url":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/","name":"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol -","isPartOf":{"@id":"https:\/\/flatsquare.in\/#website"},"primaryImageOfPage":{"@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/#primaryimage"},"image":{"@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/#primaryimage"},"thumbnailUrl":"https:\/\/flatsquare.in\/wp-content\/uploads\/edd\/2026\/08\/zipgun-usfa-22lr-3d-printed-7.jpg","datePublished":"2026-08-08T02:40:39+00:00","dateModified":"2026-08-08T02:40:43+00:00","breadcrumb":{"@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/#primaryimage","url":"https:\/\/flatsquare.in\/wp-content\/uploads\/edd\/2026\/08\/zipgun-usfa-22lr-3d-printed-7.jpg","contentUrl":"https:\/\/flatsquare.in\/wp-content\/uploads\/edd\/2026\/08\/zipgun-usfa-22lr-3d-printed-7.jpg","width":1920,"height":1080},{"@type":"BreadcrumbList","@id":"https:\/\/flatsquare.in\/index.php\/downloads\/usfa-zip-22-lr-v2-working-model-fully-3d-printed-diy-compact-pistol\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/flatsquare.in\/"},{"@type":"ListItem","position":2,"name":"Downloads","item":"https:\/\/flatsquare.in\/index.php\/downloads\/"},{"@type":"ListItem","position":3,"name":"USFA ZiP .22 LR v2 Working Model \u2013 Fully 3D Printed DIY Compact Pistol"}]},{"@type":"WebSite","@id":"https:\/\/flatsquare.in\/#website","url":"https:\/\/flatsquare.in\/","name":"www.flatsquare.in","description":"Printed From Imagination","publisher":{"@id":"https:\/\/flatsquare.in\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/flatsquare.in\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/flatsquare.in\/#organization","name":"3d printing models","url":"https:\/\/flatsquare.in\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/flatsquare.in\/#\/schema\/logo\/image\/","url":"https:\/\/flatsquare.in\/wp-content\/uploads\/2025\/05\/cropped-VVVVVVVVBVB.png","contentUrl":"https:\/\/flatsquare.in\/wp-content\/uploads\/2025\/05\/cropped-VVVVVVVVBVB.png","width":785,"height":105,"caption":"3d printing models"},"image":{"@id":"https:\/\/flatsquare.in\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/ashish.kadakkal\/","https:\/\/www.instagram.com\/_flatsquare.in\/"]}]}},"_links":{"self":[{"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-downloads\/7600","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-downloads"}],"about":[{"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/types\/download"}],"author":[{"embeddable":true,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-downloads\/7600\/revisions"}],"predecessor-version":[{"id":7608,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-downloads\/7600\/revisions\/7608"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/media\/7607"}],"wp:attachment":[{"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/media?parent=7600"}],"wp:term":[{"taxonomy":"download_category","embeddable":true,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-categories?post=7600"},{"taxonomy":"download_tag","embeddable":true,"href":"https:\/\/flatsquare.in\/index.php\/wp-json\/wp\/v2\/edd-tags?post=7600"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}