{"product_id":"nuprol-4-zero-silicone-free-black-gas","title":"NUPROL 4.Zero Silicone Free Black Gas","description":"\u003cp\u003e\u003cspan\u003eNUPROL 4.ZERO is the highest-pressure silicone-free formulation in the NUPROL gas structure, engineered for heavy bolt rifles, DMR platforms and reinforced high-mass gas blowback systems. Matching the output profile of 4.0 while eliminating silicone content, 4.ZERO delivers maximum operating force within a clean internal environment.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eHeavy steel bolts, extended travel systems and upgraded recoil assemblies require substantial driving pressure to maintain reliable cycling. 4.ZERO provides the ultra-high-pressure output necessary to overcome this mechanical resistance while maintaining a controlled and predictable pressure curve.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe blend incorporates NUPROL’s advanced micro-dose trace additive expansion system to promote rapid and stable gas expansion during each firing cycle. This supports consistent recoil impulse and stable FPS behaviour even under sustained or cold-weather use. For advanced users managing lubrication independently and running high-performance rifle builds, 4.ZERO delivers uncompromising power with refined internal control.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4.ZERO ultra-high-pressure performance grade\u003c\/li\u003e\n\u003cli\u003e300g full-size cylinder\u003c\/li\u003e\n\u003cli\u003eSilicone-free formulation\u003c\/li\u003e\n\u003cli\u003eTrace additive expansion system\u003c\/li\u003e\n\u003cli\u003eOptimised for heavy bolt rifles and DMR platforms\u003c\/li\u003e\n\u003cli\u003eSupports extreme mechanical load\u003c\/li\u003e\n\u003cli\u003eDesigned for manual lubrication routines\u003c\/li\u003e\n\u003cli\u003eStable output in harsh or cold conditions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Nuprol","offers":[{"title":"Default Title","offer_id":57166747074884,"sku":"9061","price":14.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/6465\/5940\/files\/9061.jpg?v=1788007133","url":"https:\/\/highpressureairsoft.co.uk\/products\/nuprol-4-zero-silicone-free-black-gas","provider":"HPA-UK","version":"1.0","type":"link"}