{"id":1444,"date":"2026-01-24T12:47:17","date_gmt":"2026-01-24T12:47:17","guid":{"rendered":"https:\/\/polymer80firearms.com\/?post_type=product&#038;p=1444"},"modified":"2026-01-24T12:47:45","modified_gmt":"2026-01-24T12:47:45","slug":"glock-oem-g21-13rd-magazine","status":"publish","type":"product","link":"https:\/\/usaguncenter.com\/polymer80\/product\/glock-oem-g21-13rd-magazine\/","title":{"rendered":"GLOCK OEM \u2013 G21 \u2013 13RD MAGAZINE"},"content":{"rendered":"<div class=\"wc-tab-inner wd-entry-content\">\n<p>Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation\u201d even when dropped from a great height. The high quality spring and follower ensure reliable feeding from the first to the last shot.<\/p>\n<ul>\n<li>13 \u2013 Round Capacity<\/li>\n<li>Constructed of Hardened Metal Encased in Durable Polymer<\/li>\n<li>Viewing Windows<\/li>\n<li>Polymer Base Plate<\/li>\n<\/ul>\n<p><strong>Shipping Restrictions: This item is restricted from shipping to California, Colorado (15 Round Limit), Connecticut, Hawaii, Maryland, Massachusetts, New Jersey, New York, Vermont (10 Rd Long Guns, 15 Round Handguns), Oregon, and Illinois.\u00a0<\/strong><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation\u201d even when dropped from a great height. The high quality spring and follower ensure reliable feeding from the first to the last shot. 13 \u2013 Round Capacity Constructed of Hardened Metal Encased in [&hellip;]<\/p>\n","protected":false},"featured_media":1495,"comment_status":"open","ping_status":"closed","template":"","meta":{"_gspb_post_css":"","iawp_total_views":0},"product_brand":[23],"product_cat":[45],"product_tag":[],"class_list":["post-1444","product","type-product","status-publish","has-post-thumbnail","product_brand-polymer80","product_cat-ar-45-80-lower-receivers","first","instock","shipping-taxable","purchasable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.4 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>GLOCK OEM \u2013 G21 \u2013 13RD MAGAZINE - Polymer 80 Firearms - Authorized Polymer80 Distributor<\/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:\/\/usaguncenter.com\/polymer80\/product\/glock-oem-g21-13rd-magazine\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"GLOCK OEM \u2013 G21 \u2013 13RD MAGAZINE\" \/>\n<meta property=\"og:description\" content=\"Each GLOCK magazine is constructed from a hardened steel insert encased in high tech polymer to protect the magazine and prevent deformation\u201d even when dropped from a great height. The high quality spring and follower ensure reliable feeding from the first to the last shot. 13 \u2013 Round Capacity Constructed of Hardened Metal Encased in [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/usaguncenter.com\/polymer80\/product\/glock-oem-g21-13rd-magazine\/\" \/>\n<meta property=\"og:site_name\" content=\"Polymer 80 Firearms - Authorized Polymer80 Distributor\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-24T12:47:45+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/usaguncenter.com\/polymer80\/wp-content\/uploads\/2026\/01\/glock-oem-g21-13rd-magazine.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"386\" \/>\n\t<meta property=\"og:image:height\" content=\"258\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/\",\"url\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/\",\"name\":\"GLOCK OEM \u2013 G21 \u2013 13RD MAGAZINE - Polymer 80 Firearms - Authorized Polymer80 Distributor\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/glock-oem-g21-13rd-magazine.jpg\",\"datePublished\":\"2026-01-24T12:47:17+00:00\",\"dateModified\":\"2026-01-24T12:47:45+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/#primaryimage\",\"url\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/glock-oem-g21-13rd-magazine.jpg\",\"contentUrl\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/wp-content\\\/uploads\\\/2026\\\/01\\\/glock-oem-g21-13rd-magazine.jpg\",\"width\":386,\"height\":258},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/product\\\/glock-oem-g21-13rd-magazine\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Shop\",\"item\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/shop\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"GLOCK OEM \u2013 G21 \u2013 13RD MAGAZINE\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/#website\",\"url\":\"https:\\\/\\\/usaguncenter.com\\\/polymer80\\\/\",\"name\":\"Polymer 80 Firearms - Authorized Polymer80 Distributor\",\"description\":\"Precision Components. 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