{"product_id":"echo-1-m28-upgrade-power-up-kit","title":"Echo 1 M28 Upgrade Power Up Kit","description":"\u003cp\u003eThe Echo 1 M28 Upgrade Power Up Kit.  This is a custom upgrade internal parts kit that allows you to increase your rifle's velocity up to 535-560 FPS.  Essentially it's just a piston kit and heavier spring.  Technical knowledge required to install this, or watch some Youtube videos and figure it out.  Fits in the Echo 1 branded M28 rifles only.\u003c\/p\u003e","brand":"ASA","offers":[{"title":"Default","offer_id":17128967897178,"sku":"6532d2a6-1d97-4efc-b01e-bb0cc342d2fd","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0063\/4526\/1146\/products\/DSC05163.jpg?v=1571718146","url":"https:\/\/airsoftgrounds.myshopify.com\/products\/echo-1-m28-upgrade-power-up-kit","provider":"Airsoft Grounds","version":"1.0","type":"link"}