{"product_id":"nuprol-airsoft-gas-300g-4-0-heavy-bolt","title":"NUPROL Airsoft Gas 300g (4.0 (Heavy Bolt))","description":"\u003cdiv class=\"top-product\"\u003e\n\u003cdiv class=\"banner-product\"\u003e\n\u003cdiv class=\"page-title-wrapper product\"\u003e\n\u003ch1 class=\"page-title\"\u003e\u003cspan class=\"base\" data-ui-id=\"page-title-wrapper\" itemprop=\"name\"\u003eNUPROL Airsoft Gas 4.0\u003c\/span\u003e\u003c\/h1\u003e\n\u003cdiv class=\"amshopby-option-link\"\u003e\u003ca href=\"https:\/\/nuprol.com\/nuprol\" title=\"Nuprol\" data-amshopby-js=\"brand-tooltip\" data-tooltip-content=\"\u0026lt;img class='am-brand-small_image' src='https:\/\/nuprol.com\/media\/amasty\/shopby\/option_images\/NUPROL.png' alt=\u0026quot;Brand Image\u0026quot;\/\u0026gt;\"\u003e \u003cimg title=\"Nuprol\" alt=\"Nuprol\" src=\"https:\/\/nuprol.com\/media\/images\/cache\/amasty\/shopby\/option_images\/resized\/60x60\/NUPROL.png\"\u003e \u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cp\u003eUltra-high-pressure 300g gas delivering maximum power, strong recoil and stable performance for heavy GBB platforms.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-high-pressure formulation\u003c\/li\u003e\n\u003cli\u003eDesigned for heavy rifle and DMR platforms\u003c\/li\u003e\n\u003cli\u003eStrong recoil and FPS stability\u003c\/li\u003e\n\u003cli\u003eSilicone-lubricated for seal protection\u003c\/li\u003e\n\u003cli\u003eTrace additives enhance expansion rate\u003c\/li\u003e\n\u003cli\u003eReliable cycling in cold environments\u003c\/li\u003e\n\u003cli\u003eSupports demanding, high-mass operating systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNUPROL 4.0 is the most powerful gas in the NUPROL range, engineered specifically for heavy GBB rifles, DMR setups and high-mass slide or bolt systems that demand maximum operating pressure. Delivering authoritative recoil and stable FPS output in even the harshest conditions, 4.0 ensures heavy platforms cycle with confidence where standard gases lose performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eTo maintain reliability under extreme load, the blend incorporates NUPROL’s highest concentration of trace additive expansion technology. This engineered additive package accelerates gas expansion and helps stabilise pressure during long bursts, sustained semi-auto fire or cold-weather use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eSilicone lubrication supports the replica’s seals and valves against the additional operating forces, maintaining long-term performance. For players who push the limits of GBB realism and want maximum power on every shot, NUPROL 4.0 is the definitive high-pressure solution.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRange Overview:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe NUPROL Gas Range is the flagship product line that gave the brand its name — “NUPROL” meaning New Propellant. From the earliest development stages, the goal was simple: deliver a modern, high-performance gas system engineered specifically for airsoft, offering players reliable pressure levels, predictable cycling and long-term equipment care. Today, the range spans multiple pressure grades and silicone-free alternatives, each built to serve different replicas, climates and performance requirements. Every blend is formulated on a refined propane base and enhanced with NUPROL’s trace additive expansion system, a micro-dose package that improves gas expansion, stabilises pressure and maintains consistent FPS shot after shot. Whether players need a low-pressure option for lightweight platforms, a balanced all-rounder, a high-pressure solution for full-metal builds or an ultra-power option for heavy GBB rifles, the NUPROL Gas Range delivers clean, dependable performance across all levels of play. Developed through continuous improvement and user feedback, the range reflects NUPROL’s commitment to engineering airsoft propellants that players can trust — from casual skirmishers to advanced technicians building precision platforms.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlagship “New Propellant” range that inspired the NUPROL name\u003c\/li\u003e\n\u003cli\u003eMultiple pressure levels for every replica and climate\u003c\/li\u003e\n\u003cli\u003eTrace additives improve expansion and pressure stability\u003c\/li\u003e\n\u003cli\u003eSilicone and silicone-free options for full maintenance control\u003c\/li\u003e\n\u003cli\u003eClean, consistent FPS behaviour across extended use\u003c\/li\u003e\n\u003cli\u003eFormulated for pistols, SMGs, carbines and heavy rifles\u003c\/li\u003e\n\u003cli\u003eDesigned to protect seals, valves and internal components\u003c\/li\u003e\n\u003cli\u003eReliable performance in warm, moderate and cold environments\u003c\/li\u003e\n\u003cli\u003eField-ready solutions from compact 85g cans to full-size cylinders\u003c\/li\u003e\n\u003cli\u003eEngineered for realism, reliability and user-defined performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBrand Statement:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNUPROL is a leading force in the airsoft industry, delivering a comprehensive range of high-quality products from consumables to replicas, attachments to upgrades. With extensive industry knowledge and a commitment to reliability, NUPROL is a brand that Airsoft Players can trust in—backed by experience, innovation, and trusted performance.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eSafety Information:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis product is supplied in a pressurised container and contains flammable contents. Keep away from heat sources, sparks, open flames and hot surfaces. Do not pierce or burn the container, even when empty. Protect from direct sunlight and do not expose to temperatures above 50°C. Store out of reach of children and use only as directed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"My Store","offers":[{"title":"Default Title","offer_id":59479904125273,"sku":null,"price":17.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1083\/5197\/9865\/files\/9036_1.jpg?v=1791634079","url":"https:\/\/ap0qsf-w1.myshopify.com\/products\/nuprol-airsoft-gas-300g-4-0-heavy-bolt","provider":"Get-Some Airsoft ltd","version":"1.0","type":"link"}