NUPROL Airsoft Gas 4.0 (300g)

NUPROL Airsoft Gas 4.0 is an ultra-high-pressure 300g gas engineered to deliver maximum power, strong recoil and stable cycling for the most demanding heavy GBB platforms. Designed specifically for GBB rifles, DMR setups and high-mass bolt or slide systems, Gas 4.0 provides the output required where standard and high-pressure gases begin to fall short.

This is the most powerful gas in the NUPROL lineup—built for realism, authority and cold-weather reliability.

Key Features (Quick View)

• Ultra-high-pressure airsoft gas

• 300g can size

• Designed for heavy GBB rifles and DMR platforms

• Strong recoil and stable FPS output

• Silicone-lubricated for seal and valve protection

• Trace additives enhance gas expansion rate

• Reliable cycling in cold and demanding conditions

• Supports high-mass operating systems

Formulation & Extreme Reliability

NUPROL Gas 4.0 uses a refined propane base combined with the highest concentration of NUPROL’s trace additive expansion technology. This advanced additive package accelerates expansion inside the magazine and helps stabilise pressure during sustained fire, long bursts or rapid semi-auto use.

The result is dependable cycling and consistent FPS even when driving heavy bolts, reinforced internals or extended barrels under cold or high-load conditions.

Performance & Heavy Platform Use

Gas 4.0 is purpose-built for platforms that demand maximum operating pressure. It delivers an authoritative recoil impulse and consistent cycling in replicas where lower-pressure gases may struggle—particularly in outdoor winter games or early-morning starts.

Integrated silicone lubrication protects seals and valves from the increased forces generated by ultra-high-pressure operation, supporting long-term reliability in high-performance builds.

Compatibility

• Heavy GBB rifles

• DMR gas platforms

• High-mass bolt and slide systems

Recommended only for replicas designed to safely handle ultra-high-pressure airsoft gas.

Ideal For

• Heavy GBB rifle platforms

• Gas-powered DMR builds

• Cold-weather skirmishing

• High-mass, reinforced internals

• Players seeking maximum recoil and realism

Product Specifications

• Brand: NUPROL

• Product Type: Airsoft Gas

• Gas Pressure: Ultra-High

• Can Size: 300 g

• Lubrication: Silicone-infused

• Additives: High-density trace expansion package

• Use: Heavy rifles & DMRs

• Environment: Cold to moderate conditions

Range Overview – NUPROL Gas Range

The NUPROL Gas Range is the flagship product line that inspired the brand name—“New Propellant.” Developed specifically for airsoft, the range delivers reliable pressure levels, predictable cycling and long-term equipment care.

Spanning multiple pressure grades and silicone-free alternatives, every blend is enhanced with NUPROL’s trace additive expansion system to stabilise pressure and maintain consistent FPS. From low-pressure options to ultra-power solutions for heavy GBB rifles, the range delivers clean, dependable performance across all levels of play.

Manufacturer

NUPROL is a leading force in the airsoft industry, delivering a comprehensive range of consumables, replicas, attachments and upgrades. Backed by extensive industry knowledge and continuous development, NUPROL products are trusted for their reliability, innovation and consistent on-field performance.

Safety Information

This product is supplied in a pressurised container and contains flammable gas. Keep away from heat sources, sparks and open flames. 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.