{"title":"AK Platform","description":"","products":[{"product_id":"vprs-47","title":"VPRS-47","description":"\u003cdiv class=\"OutlineElement Ltr SCXW199026459 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW199026459 BCX0\"\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW199026459 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW199026459 BCX0\"\u003eModern Energy Control for the AK Platform\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW199026459 BCX0\" data-ccp-props=\"{}\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW199026459 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW199026459 BCX0\"\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW199026459 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW199026459 BCX0\"\u003eThe VPRS-47™ brings progressive spring engineering to the AK operating system. Designed for 7.62×39 and compatible AK-pattern rifles, it replaces constant-rate recoil springs with a calibrated multi-stage variable pitch architecture.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW199026459 BCX0\" data-ccp-props=\"{}\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW199026459 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW199026459 BCX0\"\u003e\u003cspan data-contrast=\"auto\" lang=\"EN-US\" class=\"TextRun SCXW199026459 BCX0\"\u003e\u003cspan class=\"NormalTextRun SCXW199026459 BCX0\"\u003eThe AK platform is known for reliability — but factory recoil springs rely on linear resistance. The VPRS-47 introduces controlled rate progression to better manage bolt carrier velocity throughout the full stroke.\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"EOP SCXW199026459 BCX0\" data-ccp-props=\"{}\"\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW199026459 BCX0\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"OutlineElement Ltr SCXW199026459 BCX0\"\u003e\n\u003cp class=\"Paragraph SCXW199026459 BCX0\"\u003e \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Neptune Defense","offers":[{"title":"Light","offer_id":51813355127072,"sku":null,"price":29.99,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":51813355159840,"sku":null,"price":29.99,"currency_code":"USD","in_stock":false},{"title":"Heavy","offer_id":51813355192608,"sku":null,"price":29.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/8436\/5600\/files\/16A4FB64-41F7-4276-8DCA-8AA54AFBE6F1.png?v=1771705125"}],"url":"https:\/\/neptune-defense.com\/collections\/ak-platform.oembed","provider":"Neptune Defense","version":"1.0","type":"link"}