{"product_id":"polarstar-hardware-kit-3d-printable-split-gearbox-v2","title":"Polarstar Hardware Kit, 3D Printable Split Gearbox, V2","description":"\u003ch2\u003ePolarStar Hardware Kit, 3D Printable Split Gearbox, V2\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eThe PolarStar Hardware Kit contains the fasteners and small components required to assemble PolarStar's free 3D-printable V2 split gearbox lower. It is intended for custom HPA and Direct Attachment builds using PolarStar's downloadable gearbox files.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eInstead of sourcing screws, threaded inserts, springs and other small hardware individually, this kit provides the specified components required for assembling the printed gearbox lower.\u003c\/p\u003e\n\n\u003ch3\u003eFor PolarStar's 3D-printable V2 gearbox\u003c\/h3\u003e\n\n\u003cp\u003eThe kit is designed specifically for the free PolarStar V2 Gearbox Lower files. The gearbox parts themselves are not included and must be 3D printed separately.\u003c\/p\u003e\n\n\u003cp\u003eThe compression spring included in the kit is used with the rear pusher piece to keep the HPA engine seated forward in the receiver. Two 5-inch Bullet Valve Leads are also included for routing the HPA air line through the build.\u003c\/p\u003e\n\n\u003ch3\u003e3D-printable files\u003c\/h3\u003e\n\n\u003cp\u003eThe required gearbox files are available free of charge from PolarStar:\u003c\/p\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/polarstarairsoft.com\/pages\/creator-corner\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e\u003cstrong\u003eDownload PolarStar 3D-printable gearbox files\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\n\u003ch3\u003eInstallation notes\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eHeat-set inserts require a soldering iron set to approximately 200-230°C.\u003c\/li\u003e\n\u003cli\u003eThe vertical clamshell holes are correctly sized after printing and do not require drilling.\u003c\/li\u003e\n\u003cli\u003eThe grip screw pilot holes must be drilled with the included #23 drill bit before installing the threaded inserts.\u003c\/li\u003e\n\u003cli\u003e3D-printed gearbox components are required and are not included in this hardware kit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage contents\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e4 × M3 × 15 mm stainless steel BHSC screws - clamshell assembly\u003c\/li\u003e\n\u003cli\u003e1 × M2 × 4 mm stainless steel BHSC screw - switchboard mounting\u003c\/li\u003e\n\u003cli\u003e8 × M3 heat-set inserts - clamshell and grip screw mounting\u003c\/li\u003e\n\u003cli\u003e1 × M2 heat-set insert - switchboard mounting\u003c\/li\u003e\n\u003cli\u003e1 × M5 square nut - buffer tube screw\u003c\/li\u003e\n\u003cli\u003e1 × #23 HSS drill bit - grip screw pilot holes\u003c\/li\u003e\n\u003cli\u003e1 × compression spring - engine pusher mechanism\u003c\/li\u003e\n\u003cli\u003e2 × 5\" Bullet Valve Leads - HPA line routing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e3D-printed gearbox lower\u003c\/li\u003e\n\u003cli\u003ePolarStar HPA engine\u003c\/li\u003e\n\u003cli\u003eDirect Attachment Front Cylinder\u003c\/li\u003e\n\u003cli\u003ePolarstar \"Hop Up Thing\" Chamber for AEG\/HPA M4 V2\u003c\/li\u003e\n\u003cli\u003eSelector plate\u003c\/li\u003e\n\u003cli\u003eTrigger and safety assembly\u003c\/li\u003e\n\u003cli\u003eOther components required to complete the replica\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eManufacturer: PolarStar\u003c\/li\u003e\n\u003cli\u003eProduct type: hardware kit for 3D-printable gearbox\u003c\/li\u003e\n\u003cli\u003eGearbox type: V2 split gearbox lower\u003c\/li\u003e\n\u003cli\u003eApplication: custom HPA \/ Direct Attachment builds\u003c\/li\u003e\n\u003cli\u003eCompatible files: PolarStar 3D Printable V2 Gearbox Lower\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PolarStar Engineering \u0026 Machine, LLC","offers":[{"title":"Default Title","offer_id":58558842208604,"sku":"10001476","price":12.44,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6636\/2610\/files\/HardwareKitMay122026Edited.webp?v=1786710769","url":"https:\/\/atom-airsoft.fi\/en-be\/products\/polarstar-hardware-kit-3d-printable-split-gearbox-v2","provider":"Atom Airsoft","version":"1.0","type":"link"}