Everything You Need to Know About HPA
OptimusPrime
22 Jun 2026
BZ Tactical got a comprehensive primer on High Pressure Air (HPA) tanks for airsoft players, specifically focusing on the differences between aluminum and carbon fibre options. While aluminum tanks are the budget-friendly entry point, they are heavier and limited to lower pressure. Carbon fiber tanks, on the other hand, are lighter and hold more air, though they require a larger initial investment. The presenter suggests that unless you enjoy carrying extra weight for no reason, the carbon fiber route is generally where most players end up.
A significant portion of the discussion revolves around the practicalities of tank maintenance and lifespan. It turns out these tanks aren't immortal; they require periodic testing to ensure they won't turn into accidental projectiles. BZ Tactical covers the hydro-testing cycle and explains that while aluminum tanks can technically last a long time if they pass inspection, carbon fiber tanks usually have a hard expiration date, typically around fifteen years. It’s a good reminder that in the world of high pressure, vintage isn't exactly a desirable quality.
The final section breaks down tank sizes and the specific legalities of using them in the UK. Choosing between a 13ci or a 68ci tank depends entirely on how much you plan to shoot and how much you enjoy visiting the fill station. The guide concludes by navigating the bureaucratic waters of UK regulations, ensuring viewers stay on the right side of the law while on the field. It’s essentially everything you need to know to keep your airsoft gun shooting without your equipment becoming a safety hazard.