HK ARMY Hostile Green Gas


Sale price$12.99



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Hostile Green Gas is a premium, high-pressure propellant engineered to keep your gas-powered airsoft guns firing harder, faster, and more reliably. Manufactured and filled in the USA using DOT-approved canisters, this green gas is designed for peak performance and consistent output across a wide range of conditions.

Formulated with a silicone-based lubricant, Hostile Green Gas protects and conditions internal O-rings and seals, preventing dry rot, leaks, and long-term wear inside gas magazines, pistols, rifles, and gas-powered grenades. With an output of approximately 115 PSI at 70°F, this blend delivers stability and power shot after shot.

Built with safety in mind, each can features an integrated pressure-release valve that automatically vents excess pressure caused by heat or over-pressurization, reducing explosion risk and ensuring true field-ready reliability.

Features

  • High-Power Output Approximately 10% stronger than standard green gas for harder recoil, quicker cycling, and improved cold-weather consistency.
  • Integrated Silicone Lubrication Silicone-infused formula conditions O-rings and seals to prevent drying, cracking, and leaks.
  • Safe, Controlled Performance Delivers a consistent 115 PSI at 70°F, ideal for gas magazines, blowback systems, and airsoft grenades.
  • Pressure-Release Safety Valve Automatically vents excess pressure to maintain safe operating levels in high-temperature environments.
  • Made In The USA Manufactured and filled domestically in US DOT-approved canisters with certified propellant contents.
  • Made In The USA Manufactured and filled domestically in US DOT-approved canisters with certified propellant contents.
  • Reliable Across All Platforms Perfect for GBB pistols, gas rifles, SMGs, shotguns, and gas-powered grenades.

Common Product Questions

Find quick answers about our airsoft products, shipping and policies.

Will this part fit my platform?

Compatibility is product-specific. Check the brand, model, size, and platform named in the product description, such as Tokyo Marui Hi-Capa 4.3 or 5.1, AAP-01, Umarex/VFC Glock, or a particular AEG gearbox type.

Similar-looking parts are not always interchangeable, so contact our team with your exact model if you are unsure.

Do I need tools or gunsmithing?

That depends on the upgrade. Simple external parts may be straightforward, but internal upgrades can require disassembly, reassembly, adjustment and testing.

If you are not comfortable working inside your airsoft gun, our team offers professional tech and custom-build services.

Can LA Airsoft install this part for me?

Yes. We can build and upgrade Hi-Capas, AAP platforms, and rifles. Choose your base gun and parts, then add the appropriate tech service.

The current custom-build service states that builds are normally completed in approximately 3 to 5 days, with the team reviewing the selected parts for compatibility.

How should I maintain this product?

Regular maintenance helps preserve performance and reliability. Keep the product clean, follow the manufacturer’s lubrication instructions, and properly manage batteries, gas systems, and internal components. More advanced repairs or internal servicing should be handled by an experienced airsoft technician.

How quickly will my order ship?

Orders without preorder items are typically packed the same day when placed before 4:30 p.m. Central Time. Please note that occasional delays can occur during especially busy periods or when staffing is limited.

Will this part increase my FPS?

Not every upgrade increases FPS. Some parts are designed primarily for reliability, cycling speed, weight reduction, or gas efficiency. When a product has a tested FPS claim, it should be stated in the listing.