{"product_id":"polarstar-airsoft-jack-electro-pneumatic-gearbox-conversion-kit-model-v2-m4-m16","title":"PolarStar Airsoft JACK Electro-Pneumatic Gearbox Conversion Kit (Model: V2 M4 \/ M16)","description":"\u003ch4\u003eFeatures\u003c\/h4\u003e\n\u003cul class=\"productfeatures\"\u003e\n\u003cli\u003eDesigned, manufactured and built in the U.S.A.\u003c\/li\u003e\n\u003cli\u003eAssembled from CNC machined aluminum components with high performance delrin nozzle\u003c\/li\u003e\n\u003cli\u003eUniversal cylinder design is compatible with numerous gearbox versions\u003c\/li\u003e\n\u003cli\u003eOptimized flow profile, firing point and flow path promotes superior shot consistency and accuracy. Independently adjustable velocity and cyclic rate\u003c\/li\u003e\n\u003cli\u003eCapable of functioning in damp and sub-freezing climates without affecting performance or reliability\u003c\/li\u003e\n\u003cli\u003eUser selectable Semi\/Full Auto, Semi Auto Only and Variable Burst modes. Auto Switch mode allows for proper selector configuration for specific models\u003c\/li\u003e\n\u003cli\u003eEasy to use Fire Control Unit (FCU) with LCD display and five position joystick\u003c\/li\u003e\n\u003cli\u003eInstantaneous trigger response. Faster than an AEG with a Li-po\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PolarStar","offers":[{"title":"Default Title","offer_id":48826545242295,"sku":"48826545242295","price":276.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0646\/4408\/7991\/files\/image_2026-07-04_102637149.png?v=1783175185","url":"https:\/\/ftxtactical.net\/products\/polarstar-airsoft-jack-electro-pneumatic-gearbox-conversion-kit-model-v2-m4-m16","provider":"FTX Tactical LLC","version":"1.0","type":"link"}