{"product_id":"polarstar-f2-m249-hpa-paineilmakoneisto","title":"Polarstar F2 M249 HPA compressed air mechanism","description":"\u003cp\u003eThe PolarStar F2 combines the extreme performance of the PolarStar Fusion Engine with a compact and universally compatible design. The F2’s key feature is its dual solenoid system, inherited from the Fusion Engine, which allows independent adjustment of the valve and nozzle movement. This provides unprecedented control over both the loading time and air volume. It also enables complete customization of firing modes and solenoid movements, allowing the F2 to operate in either closed-bolt or open-bolt configuration.\u003c\/p\u003e\n\u003cp\u003eThe F2™ is built around a lightweight poppet valve design, similar in principle to the Fusion Engine™ poppet. This lightweight valve operates at lower pressures and consumes less air, improving air efficiency compared to the Fusion Engine.\u003c\/p\u003e\n\u003cp\u003eThe well-thought-out design supports a wide operating pressure range from 45 psi to 145 psi. This broad range allows the F2 to achieve both low and high muzzle velocities, making it suitable for airsoft guns intended for close-quarters combat as well as long-range precision builds.\u003c\/p\u003e\n\u003cp\u003eThe F2’s nozzle return mechanism is spring-driven, providing consistent loading force regardless of operating pressure. The F2 is compatible with Fusion Engine nozzle springs.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0612\/6636\/2610\/files\/img_11671_dbcc229f30ee16f172c8081baefe7019_1-1.jpg\"\u003e\u003cimg class=\"aligncenter wp-image-646351 size-full\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0612\/6636\/2610\/files\/img_11671_dbcc229f30ee16f172c8081baefe7019_1-1.jpg\" alt=\"\" width=\"800\" height=\"600\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMuzzle Velocity: 145 psi with 363 mm barrel and 0.20 g BB – 146 m\/s\n\u003cul\u003e\n\u003cli\u003eThe F2™ allows easy adjustment of muzzle velocity simply by changing the input pressure on the regulator, without requiring different nozzles. In a standard M4 rifle, for example, it can achieve 85–146 m\/s (280–480 FPS) with 0.20 g BBs. Velocity may vary depending on the model, as longer barrels increase maximum speed while shorter barrels reduce it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eRate of Fire: 30 rounds per second (30 RPS)\n\u003cul\u003e\n\u003cli\u003eThe maximum rate of fire of the F2™ depends on several factors, such as operating pressure and BB quality. 30 rounds per second is achievable in most standard configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAir Efficiency: 1000+ shots with a 13\/3000 tank @ 1.5 J using 0.28 g BBs\n\u003cul\u003e\n\u003cli\u003eThe standard F2™ valve corresponds to the Fusion Engine™ Red Low-Flow valve. However, this valve responds faster and requires less air to operate, allowing the F2™ to achieve greater air efficiency than a finely tuned Fusion Engine™. (Test configuration: Red valve \/ 6.05x375 mm barrel)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eF2 HPA unit\u003c\/li\u003e\n\u003cli\u003e6 mm macro line (HPA hose fitting sold separately!)\u003c\/li\u003e\n\u003cli\u003eWire harness\u003c\/li\u003e\n\u003cli\u003eFCU\u003c\/li\u003e\n\u003cli\u003eTrigger board with magazine connector\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote: In addition to the unit, you will need a 7.4V battery with JST connector, a regulator, a hose, and a fitting between the hose and the unit.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Polarstar","offers":[{"title":"Default Title","offer_id":54238296899932,"sku":"10000574","price":537.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6636\/2610\/files\/img_11672_f239f1367a76214819bb77691dfeec24_1_38bbbaca-0caa-4b33-b204-c1fb61fbcb79.jpg?v=1743396847","url":"https:\/\/atom-airsoft.fi\/en-hr\/products\/polarstar-f2-m249-hpa-paineilmakoneisto","provider":"Atom Airsoft","version":"1.0","type":"link"}