{"product_id":"retro-arms-cnc-stainless-steel-cylinder-type-d","title":"Retro Arms CNC Stainless Steel Cylinder Type D (370mm–650mm)","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 Retro Arms CNC Stainless Steel Cylinder Type D is a high-precision internal compression component designed for long-barrel AEG and DMR builds. Precisely machined from high-grade stainless steel, it undergoes a specialized thermochemical treatment to achieve a surface hardness of 630 HBA, ensuring extreme wear resistance and a long service life. The internal bore is finished to a high polish to minimize frictional resistance against the piston head O-ring, while its larger internal diameter offers a \"bore up\" style profile for increased air volume. While air volume is ultimately dependent on both your chosen BB weight and barrel length, this Type D cylinder provides the optimal volume outline for long platforms with inner barrels ranging from 370mm to 650mm.\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 370mm – 650mm (Approximate outline for long-range builds).\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 CNC-machined Stainless Steel with 630 HBA thermochemical hardening.\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);'\u003eInternal Profile:\u003c\/strong\u003e Enlarged \"bore up\" style internal diameter for maximum air volume.\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);'\u003eFinish:\u003c\/strong\u003e High-polish internal bore for reduced friction and consistent air seal.\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);'\u003eType:\u003c\/strong\u003e Type D (Non-ported \/ Full).\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);'\u003eCompatibility:\u003c\/strong\u003e Standard Tokyo Marui-spec gearboxes; specifically optimized for Retro Arms gearbox shells.\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=\"\" 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\" 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; 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 Because this features a larger internal diameter, Northmark Vault recommends ensuring your piston head O-ring provides a proper seal for this bore up profile. Air volume requirements also shift based on BB weight; heavier BBs may require this full volume even on shorter barrels.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Retro Arms","offers":[{"title":"Default Title","offer_id":46953649832085,"sku":"7166","price":18.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/9704\/3605\/files\/2867_7166_6995_9254ff8c-e108-4cb1-9a9c-4afac4972e51_1024x_jpg.webp?v=1770936261","url":"https:\/\/www.northmarkvault.com\/products\/retro-arms-cnc-stainless-steel-cylinder-type-d","provider":"Northmark Vault","version":"1.0","type":"link"}