{"product_id":"spark-hiei-kai-6-15mm-wide-bore-high-precision-inner-barrel-for-electric-guns","title":"SPARK Hiei Kai 6.15mm Wide Bore High-Precision Inner Barrel for Electric Guns","description":"\u003cdiv class=\"n6owBd awi2gc\"\u003eThe \u003cstrong class=\"rQesXe MPyX\"\u003e\u003cspan class=\"iNqyIf\"\u003eSPARK Hiei Kai 6.15mm Wide Bore Series\u003c\/span\u003e\u003c\/strong\u003e is the ultimate pinnacle of internal trajectory engineering, built to deliver unrivaled grouping accuracy and flat flight performance in custom AEGs. Developed through a collaboration between Airsoft97 and the master metalcraft artisans at \u003cstrong class=\"rQesXe MPyX\"\u003eda Vinci\u003c\/strong\u003e, these high-end barrels are meticulously crafted from the highest grade domestic cold-forged stainless steel.\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eThe 6.15mm wide bore design creates an optimized cushion of pressurized air entirely surrounding the BB as it travels down the bore. This cushion isolates the projectile from the interior metal surfaces, virtually eliminating accuracy-killing barrel wall bounces while achieving the flat, long-distance trajectories unique to high-tier wide-bore builds.\u003c\/div\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003eThis master craftsmanship series serves two crucial engineering purposes across its specific lengths:\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003col class=\"IaGLZe VimKh\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eMuzzle Air Layer Management:\u003c\/strong\u003e Employs an ultra-long \u003cstrong class=\"rQesXe MPyX\"\u003e20mm precision taper at the muzzle tip\u003c\/strong\u003e, smoothing air expansion behind the BB as it exits to eliminate destabilizing air turbulence.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eHOP Window Optimization:\u003c\/strong\u003e Features a custom-shaped, super-polished hop-up window to apply a perfectly square, friction-stabilized backspin on high-weight BBs (0.25g and heavier).\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"yhAwj\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2 class=\"otQkpb\" role=\"heading\"\u003eTechnical Specifications:\u003c\/h2\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eMaterial:\u003c\/strong\u003e Highest grade domestic cold-forged SUS304 stainless steel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eBore Diameter:\u003c\/strong\u003e 6.15mm Wide Bore (Tolerance controlled via pure domestic CNC machining)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eMuzzle Design:\u003c\/strong\u003e 20mm Super-Long Air-Cushion Taper\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eVariant Selection Profile:\u003c\/strong\u003e\u003c\/span\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003e275mm:\u003c\/strong\u003e Optimized length pairing for short-carbines and CQB-length setups.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003e300mm (Polished):\u003c\/strong\u003e Features a specialized interior mirror-polish finish tailored to minimize gas friction and maximize acoustic sound reduction.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003e455mm:\u003c\/strong\u003e Full-length field barrel maximized for long outer barrel configurations (e.g., AK, M16, DMR setups) demanding extended flight lines.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003ePackage Contents:\u003c\/strong\u003e 1x SPARK Hiei Kai 6.15mm Wide Bore Inner Barrel (of chosen length selection)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eCompatibility:\u003c\/strong\u003e Standard Version 2\/3 Tokyo Marui-specification AEG hop-up chambers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eOrigin:\u003c\/strong\u003e 100% Made in Japan\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"n6owBd awi2gc\"\u003e\u003cem class=\"eujQNb\"\u003eTech \u0026amp; Safety Warning: Wide bore barrels purposefully vent excess cylinder air volume around the projectile to stabilize flight, which will introduce a minor drop in overall muzzle FPS. Ensure your internal gearbox air-volume parameters are matched with a premium cylinder setup to counteract potential under-volume power drop-off.\u003c\/em\u003e\u003c\/div\u003e","brand":"SPARK (Airsoft97)","offers":[{"title":"275mm","offer_id":47772444000405,"sku":"SPK-HIEI-615-275","price":94.99,"currency_code":"USD","in_stock":true},{"title":"300mm (Polished, Northmark Vault Custom)","offer_id":47772444033173,"sku":"SPK-HIEI-615-300-NMV","price":119.99,"currency_code":"USD","in_stock":true},{"title":"455mm","offer_id":47772444065941,"sku":"SPK-HIEI-615-455","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/9704\/3605\/files\/spark-hiei-kai-6-15mm-wide-bore-high-precision-inner-barrel-for-electric-guns.webp?v=1787605169","url":"https:\/\/www.northmarkvault.com\/products\/spark-hiei-kai-6-15mm-wide-bore-high-precision-inner-barrel-for-electric-guns","provider":"Northmark Vault","version":"1.0","type":"link"}