Constant Pressure, Bold Style - HK Army 48ci 3000psi Aluminium HPA Tank with Regulator (Blue)

Eliminate the unpredictability of gas expansion and take control of your performance with the HK Army 48ci 3K tank. Finished in a deep Electric Blue, this high-pressure air system is the perfect entry point for players looking to move away from traditional Green Gas. Built from high-grade aluminium and paired with a reliable HK Army regulator, this tank is designed to provide a steady flow of air to your HPA engine or tapped gas magazine, regardless of how fast you pull the trigger.

Key Features & Performance

• Lightweight Aluminium Core: A robust but manageable bottle designed to balance perfectly on your back or within a standard tank pouch.
• High-Flow HK Regulator: Pre-fitted with a high-performance regulator that ensures rapid recharge rates for consistent FPS during rapid-fire strings.
• 3000psi Rated: Provides a reliable and safe air capacity for standard skirmish days at any UK site.
• Dual Burst-Disk Safety: Built-in safety features that protect against over-pressurisation for total peace of mind on the field.
• Durable Anodised Blue: The high-visibility blue finish is anodised directly into the metal, making it resistant to the scratches and scuffs of outdoor play.
• Industry Standard Threads: Features a universal 1/2 inch thread pattern, allowing it to fit any standard HPA regulator/line setup.

The "Pro" Take

The Blue HK Army 48/3000 is often the "gold standard" recommendation for players building their first HPA kit. While many veterans eventually move to carbon fibre for the weight savings, the aluminium tank remains a favourite for its sheer "bomb-proof" durability. In the world of HPA, your regulator's recharge rate is just as important as the air itself; the HK Army reg included here is excellent at preventing "bolt-stick" or FPS drop-off during binary or full-auto fire. It is a reliable workhorse that looks great and performs even better under pressure.

UK Spec & Site Performance

For UK players, HPA is the ultimate "weather-proofer." Unlike Green Gas, which often fails during cold mornings at sites like "The Mall" or "Combat South," HPA remains completely stable. This Blue 48ci tank will deliver the exact same Joules at 2 degrees Celsius as it does at 25. This tank is fully "PI" marked and UK-legal, meaning it can be filled at any commercial dive shop or airsoft site with a compressor. We recommend this for both woodland and CQB; while a bit larger than a 13ci tank, it provides the air volume needed for longer 2-hour "milsim-lite" stints without needing to run back to the safe zone for a refill. Just ensure your secondary regulator is locked to meet your site's specific Joule limits (e.g. 1.13J for standard rifles).

Friendly FAQ

How do I refill this tank at my local site?
Simply connect the site's fill-whip to the foster fitting on the side of the regulator. Most UK sites will have a staff member who can assist you with your first few fills!

Will the blue finish fade over time?
Because the finish is anodised rather than painted, it is very resistant to fading and general wear, though we always recommend using a tank cover to protect it from direct impacts.

Can I use this for a HPA-tapped pistol?
Yes, this is an ideal air source for HPA-tapped GBB pistols. You will just need a secondary regulator and a line to step the pressure down to the ~100psi range.

Is there a warranty on the regulator?
HK Army products are known for their quality, and the regulator is a serviceable part. We stock spare O-rings and burst-disks should you ever need to perform basic maintenance.