{"product_id":"laylax-prometheus-stainless-hard-cylinder-type-b","title":"Prometheus Stainless Hard Cylinder Type B (401mm–450mm)","description":"\u003cdiv class=\"n6owBd awi2gc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIAhAA\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eThe Prometheus Stainless Hard Cylinder Type B is a high-performance internal component engineered to maximize air volume efficiency for AEGs. Precision-machined from high-durability stainless steel, this cylinder features an external heatsink rib design that effectively dissipates heat generated by the piston head during rapid cycling. This cooling effect prevents the piston head O-ring from expanding excessively, reducing frictional resistance and maintaining a consistent air seal. While the required air volume is ultimately dependent on both your chosen BB weight and barrel length, this Type B cylinder provides the optimal volume outline for platforms with inner barrels between 401mm and 450mm.\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIAhAA\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2 class=\"n6owBd awi2gc\" data-sfc-root=\"c\" data-hveid=\"CAEIAxAA\" data-processed=\"true\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\n\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eTechnical Specifications:\u003c\/strong\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cul class=\"KsbFXc U6u95\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-processed=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 12px 0px 16px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAA\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eRecommended Barrel Length:\u003c\/strong\u003e 401mm – 450mm (Approximate outline for standard setups).\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAB\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eMaterial:\u003c\/strong\u003e High-grade stainless steel with a high-polish internal bore for reduced friction.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAC\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eCooling System:\u003c\/strong\u003e Integrated external heatsink ridges to dissipate heat and stabilize O-ring temperature.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAD\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eCompatibility:\u003c\/strong\u003e Standard Tokyo Marui-spec Version 2, 3, and 6 gearboxes.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAE\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003ePrimary Function:\u003c\/strong\u003e Provides optimized air compression and volume matching.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAF\" data-complete=\"true\" data-sae=\"\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003ePerformance Impact:\u003c\/strong\u003e Minimizes velocity variance and stabilizes trajectory by ensuring proper air-to-barrel ratio.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-hveid=\"CAEIBBAG\" data-complete=\"true\" data-sae=\"\" aria-owns=\"action-menu-parent-container\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px 0px 12px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cspan class=\"T286Pc\" data-sfc-cp=\"\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003e\u003cstrong class=\"Yjhzub\" data-sfc-root=\"c\" data-sfc-cb=\"\" data-complete=\"true\" data-copy-service-computed-style='font-family: \"Google Sans\", \"Helvetica Neue\", sans-serif; font-size: 16px; font-weight: 600; margin: 0px; text-decoration: none; border-bottom-width: 0px; border-bottom-style: none; border-bottom-color: rgb(230, 232, 240);'\u003eNorthmark Vault Tech Tip:\u003c\/strong\u003e Air volume requirements shift based on BB weight; heavier BBs may require more volume despite barrel length outlines.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Laylax \/ Prometheus","offers":[{"title":"Default Title","offer_id":46953664250005,"sku":"LL-4582109580691","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/9704\/3605\/files\/cylinder_B_jpg.webp?v=1770937338","url":"https:\/\/www.northmarkvault.com\/products\/laylax-prometheus-stainless-hard-cylinder-type-b","provider":"Northmark Vault","version":"1.0","type":"link"}