{"id":20662,"date":"2026-04-09T15:11:32","date_gmt":"2026-04-09T19:11:32","guid":{"rendered":"https:\/\/saddlerockarmory.com\/?post_type=product&#038;p=20662"},"modified":"2026-04-22T15:30:40","modified_gmt":"2026-04-22T19:30:40","slug":"otter-creek-labs-polonium-k-5-56","status":"publish","type":"product","link":"https:\/\/saddlerockarmory.com\/index.php\/product\/otter-creek-labs-polonium-k-5-56\/","title":{"rendered":"Otter Creek Labs Polonium K &#8211; 5.56"},"content":{"rendered":"<ul>\n<li>Caliber: 5.56 NATO, .223 Remington, 6mm\/.243 (6 ARC, 6mm Creedmoor, 6mm Dasher, .243 Winchester)<\/li>\n<li>Length: 4.8 inches<\/li>\n<li>Weight: 11.5 oz (without mount)<\/li>\n<li>Outer diameter: 1.625 inches<\/li>\n<li>Bore diameter: 6mm<\/li>\n<li>Material: H900 heat-treated 17-4 stainless steel<\/li>\n<li>Construction: CNC welded tubeless design<\/li>\n<li>Rear thread: 1.375&#215;24 (HUB standard)<\/li>\n<li>Minimum barrel length: 7.5&#8243; for 5.56\/.223 and 7.62&#215;39<\/li>\n<li>Full-auto rated: Yes<\/li>\n<li>Belt-fed rated: Yes, on 16&#8243; 5.56 belt-fed machine guns. Do not exceed 300-round string\u00a0without cool down.<\/li>\n<li>Flash hider: Integrated internal and external<\/li>\n<li>Warranty: Lifetime, no BS<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>New &#8211; Otter Creek Labs Polonium K chambered for 5.56mm<\/p>\n","protected":false},"featured_media":20663,"template":"","meta":{"_acf_changed":false,"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_themeisle_gutenberg_block_has_review":false},"product_brand":[],"product_cat":[1672],"product_tag":[1680],"class_list":["post-20662","product","type-product","status-publish","has-post-thumbnail","product_cat-silencers","product_tag-otter-creek-labs","product_shipping_class-light-package","first","onbackorder","taxable","shipping-taxable","purchasable","product-type-simple"],"acf":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/product\/20662","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/media\/20663"}],"wp:attachment":[{"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/media?parent=20662"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/product_brand?post=20662"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/product_cat?post=20662"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/saddlerockarmory.com\/index.php\/wp-json\/wp\/v2\/product_tag?post=20662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}