{"id":7723,"date":"2026-09-13T05:00:09","date_gmt":"2026-09-13T05:00:09","guid":{"rendered":"https:\/\/flatsquare.in\/?post_type=download&p=7723"},"modified":"2026-09-13T05:00:14","modified_gmt":"2026-09-13T05:00:14","slug":"covid-22-22lr-prototype-print-turned-out-crisp","status":"publish","type":"download","link":"https:\/\/flatsquare.in\/index.php\/downloads\/covid-22-22lr-prototype-print-turned-out-crisp\/","title":{"rendered":"COVID-22 .22LR prototype. Print turned out crisp"},"content":{"rendered":"\n

Fresh off the print bed: a fully completed prototype of the COVID-22 chambered in .22LR. Printed using premium PLA Plus<\/strong> for optimal layer adhesion and structural integrity. Getting the headspace dialed in perfectly and verifying the smooth release of the firing pin assembly before taking it down for safety checks.<\/p>\n\n\n\n

Caption:<\/strong> Functional iteration of the COVID-22 rimfire build.<\/strong> \ud83d\udcd0 Testing fitment, tolerances, and pin engagement. #PistolPrototype #Rimfire #HobbyistEngineering #3DPrinting.<\/p>\n\n\n\n

A detailed look at the latest bench-test prototype for the COVID-22 .22LR single-shot design. This build explores the viability of compact, mechanical print-in-place and multi-part assemblies using basic workshop hand tools. Focus areas for this version include reinforcement around the breech face and tuning the manual cocking piece for consistent engagement.<\/p>\n\n\n\n

Plinker prototyping: The COVID-22 .22LR.<\/strong> \ud83e\uddf5 Small frame, simple mechanics. #2A #3DPrint #PlaPlus #BenchBuilt<\/p>\n\n\n\n

Bench testing the compliance and structural feedback of the COVID-22 layout. Utilizing a standard barrel liner and basic hardware components to verify how well the printed latch system handles manual cycling.<\/p>\n\n\n\n

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Fresh off the print bed: a fully completed prototype of the COVID-22 chambered in .22LR. Printed using premium PLA Plus for optimal layer adhesion and structural integrity. Getting the headspace dialed in perfectly and verifying the smooth release of the firing pin assembly before taking it down for safety checks. Caption: Functional iteration of the […]<\/p>\n","protected":false},"author":1,"featured_media":7731,"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-7723","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":"\nCOVID-22 .22LR prototype. 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