One of the most common questions we get asked — and the most common reason people abandon an HPA rifle in their cart — is: what does a full HPA setup actually cost?
The rifle is just the start. HPA rifles don't run off a battery or a gas magazine like an AEG or GBB. They need an external air tank, a regulator, a line, and a small battery for the FCU. If you've never bought HPA before, it can feel like there's a hidden cost waiting round every corner.
There isn't. But you do need to know what you're buying. This guide breaks down every component, what you should expect to pay, and where you can save money without compromising your setup.
The five things you need for a complete HPA setup
Every HPA setup — whether you're running a Wolverine MTW, a Heretic Labs Article Series, or any other HPA platform — needs these five things:
- An HPA rifle
- An air tank
- A regulator
- An HPA line
- A small battery (for the FCU)
Some setups combine the tank and regulator into one unit. Most don't. We'll cover both below.
1. The HPA rifle
The biggest single cost in any HPA setup. In the UK, entry-level dedicated HPA platforms start from around £500 and go up from there. The two most popular platforms we sell are:
- Wolverine MTW range — from £769.95. The field player's choice. Fully modular, mil-spec dimensions, compatible with real AR accessories, and built around Wolverine's INFERNO XTS engine. Available in 7" CQB, 10" SBR, and 14" carbine configurations.
- Heretic Labs Article Series — from £795. The speedsoft and competition choice. Born from the same engineering team as Wolverine, the Article Series is built for aggressive, fast-paced play with a distinctive look that stands apart from everything else on the field.
You can also convert an existing M4 AEG to HPA using a drop-in engine like the Wolverine INFERNO Gen2, which brings the entry point down significantly. We've written a full guide on that: How to convert your M4 AEG to HPA.
Typical cost: £500–£1,000+ for a dedicated HPA platform. £150–£450 for an engine conversion on an existing AEG.
2. The air tank
Your air tank is the fuel tank of your HPA system. It stores compressed air at high pressure (typically 3,000psi or 4,500psi) and connects to your regulator, which steps that pressure down to a usable level for your engine.
Tanks come in aluminium and carbon fibre. Carbon fibre tanks are lighter and hold higher pressure — they cost more but are worth it for regular players.
The main thing to choose is capacity (measured in cubic inches):
- 48ci — compact and lightweight. Good for CQB, speedsoft, or players who want a smaller rig. Gets you through a full game day on most setups with careful use.
- 68ci — the sweet spot for most field players. Big enough for a full day's play without needing a refill on most setups, compact enough that it doesn't add unwieldy bulk to your rig. This is what we'd recommend to the majority of players buying their first HPA tank.
- 98ci — maximum capacity. Heavier but the longest runtime. Popular with milsim players and those who can't get a refill easily during the day.
Important note: all tanks are shipped empty. Couriers won't carry pressurised vessels. You'll need to fill your tank at your site's fill station or at a paintball shop before your first game.
Our current tank range:
- 48ci 3k HPA Air Tank — £44.95 (aluminium, entry level)
- HK Army Alpha 48ci — carbon fibre, 4500psi
- HK Army Alpha 68ci — £194.95, the most popular all-day field tank
- HK Army Alpha 98ci — maximum capacity
Typical cost: £45–£200 depending on size and material. Budget £100–£200 for a solid carbon fibre 48ci–68ci setup.
3. The regulator
Your regulator screws onto the tank and steps the high pressure down to a consistent output pressure your engine can actually use — typically 60–150psi depending on your setup and preferred velocity.
This is the component where quality matters most. A cheap or inconsistent regulator will cause shot-to-shot velocity variation, which defeats the main advantage of running HPA in the first place.
There are two types to understand:
- Tank-mounted regulators — screw directly onto the tank. Most players run this configuration. The regulator output connects to your line, which connects to your engine.
- Inline regulators (secondary regulators) — some engines and pistol setups run a secondary inline regulator in the line itself for finer pressure control. The OXYGEN GEN2 0-150psi Regulator is a popular choice for this.
For most rifle setups, a single quality tank-mounted regulator is all you need. Our recommendations:
- HK Army HP8 Regulator — £39.95. Entry level, functional, gets the job done.
- Airtac AT200 Regulator — £69.95. Excellent value, 0–200psi range, dual output port, includes spare key and lid. Our go-to recommendation for most setups.
- HK Army Hostile XLP — from £99.95. Premium option, rapid recharge rate, 40–150psi adjustable output, tournament lock.
- Wolverine Storm Category 5 — £149.95. The dedicated Wolverine regulator, optimised specifically for INFERNO and MTW setups. Worth the premium if you're running a Wolverine platform.
Typical cost: £40–£150. Budget around £70–£100 for a solid mid-range regulator that will last years.
4. The HPA line
The line connects your regulator to your engine. It runs from the tank on your back or hip, through a quick-disconnect fitting, to the inlet on your rifle.
Don't underestimate the line. A cheap 6mm macro line will restrict airflow, cause pressure drop, and can fail mid-game. A quality wide-bore braided line like the Amped makes a measurable difference to refresh rate and consistency — especially on air-hungry platforms like GBBRs or high-ROF setups.
The standard length for most field setups is 36". Longer lines (42") give more flexibility if you prefer your tank at hip height. The quick-disconnect fittings at each end let you separate tank and rifle in seconds between games.
- Strike Airsoft 40" Flex HPA Line — £24.95. Budget option, gets the job done.
- AirTac Superflex 40" HPA Line — £29.95. Good flexibility, solid construction.
- Amped Airsoft Standard Weave 36" — from £39.95. The industry standard. Wide bore, dual QD fittings, nylon-sheathed, lifetime warranty. This is what we put in every build and what we'd recommend to anyone.
Typical cost: £25–£40. Don't cut corners here — a £40 Amped line will outlast a £15 macro line many times over.
5. The battery
HPA rifles don't run on a big LiPo like an AEG does. The battery powers the FCU (the electronic control board that handles trigger response, fire modes, and BLINC if fitted). It's a small 7.4v LiPo — typically 300mAh — that fits inside the stock or grip.
This is the most overlooked item when people are budgeting for HPA. It's also the cheapest — typically under £15.
- Rebel Battery HPA Micro 7.4v 35c 300mAh — £10.95
- Nuprol Power 300mAh 7.4v Micro — compact, high-discharge, designed specifically for HPA FCUs
One charge typically lasts a full game day. Charge it the night before, same as you would an AEG battery.
Typical cost: £10–£15.
What does a complete HPA setup cost? The totals
Here's a realistic budget breakdown for three common setups:
Entry level — AEG conversion with INFERNO engine
Best for: players who already own an M4 AEG and want to try HPA without buying a dedicated platform.
| Item | Example product | Approx. cost |
|---|---|---|
| HPA Engine | Wolverine INFERNO Gen2 Spartan | ~£170 |
| Tank | 48ci 3k Aluminium Tank | £45 |
| Regulator | Airtac AT200 | £70 |
| Line | Amped Standard Weave 36" | £40 |
| Battery | Rebel HPA Micro 7.4v | £11 |
| Total (plus your existing AEG) | ~£336 | |
Mid-range — dedicated HPA rifle, solid system
Best for: players buying their first dedicated HPA platform and wanting a complete setup that will last.
| Item | Example product | Approx. cost |
|---|---|---|
| HPA Rifle | Wolverine MTW Billet Tactical 10" | £769.95 |
| Tank | HK Army Alpha 68ci Carbon | ~£200 |
| Regulator | HK Army Hostile XLP | £99.95 |
| Line | Amped Standard Weave 36" | £39.95 |
| Battery | Rebel HPA Micro 7.4v | £10.95 |
| Total | ~£1,105 | |
Premium — full competition-ready setup
Best for: serious players who want the best of everything and plan to run HPA long-term.
| Item | Example product | Approx. cost |
|---|---|---|
| HPA Rifle | Heretic Labs Article 3 | £795 |
| Tank | HK Army Alpha 77ci | £194.95 |
| Regulator | Wolverine Storm Category 5 | £149.95 |
| Line | Amped Standard Weave 36" | £39.95 |
| Battery | Rebel HPA Micro 7.4v | £10.95 |
| Total | ~£1,190 | |
Save money with the HPA Starter Bundle
If you're buying a new HPA rifle, the easiest way to get everything you need in one order is our HPA Starter Bundle. It covers the tank, regulator, line, and battery together at a discounted rate — so you don't have to work out which components go together, and you save versus buying each item separately.
Add it to your basket alongside any HPA rifle purchase and everything arrives together, ready to set up before your next game day.
Ongoing costs — what does HPA cost to run?
Once your setup is running, the ongoing costs are low:
- Air fills — most UK airsoft sites offer free or low-cost fills at their fill station. Some charge a small fee (typically £2–£5 per fill). A 77ci tank at 4,500psi will last most players a full game day before needing a refill.
- Hydrostatic testing — tanks require a hydro test periodically (typically every 5 years). This is a safety check on the pressure vessel. Cost is typically £20–£30 and your tank's manufacture date and test date are stamped on the body.
- Battery charging — the 300mAh FCU battery charges from near-flat in under an hour with a standard LiPo balance charger. Negligible cost.
- BBs — the same as any airsoft platform. HPA rifles typically run 0.28g–0.32g for field play to take advantage of the consistent velocity. Heavier BBs give better trajectory and accuracy at the energy levels HPA runs at.
Frequently asked questions
Do I need UKARA to buy an HPA rifle?
Yes — HPA rifles are Realistic Imitation Firearms (RIFs) in the same way as AEGs and GBBRs. You need a valid UKARA defence or another recognised defence to purchase. We are a UKARA registered retailer. Two-tone versions are available on request if you are working towards your UKARA.
Can I use my HPA tank at any UK airsoft site?
Most UK airsoft sites have HPA fill stations. Before your first game at a new site, confirm they can fill to your tank's rated pressure — 3,000psi or 4,500psi depending on your tank. Sites running a 3,000psi fill station cannot fully fill a 4,500psi tank, though it will still work at lower capacity.
What PSI should I run?
This depends on your platform and what velocity you want to achieve. Most UK field setups run between 80–120psi output from the regulator. Your engine's manual will give you the relationship between PSI and FPS/joules for your specific setup. We offer PSI tuning as part of our HPA tech service if you want help getting your setup dialled in correctly.
Is HPA worth the extra cost over AEG?
For most regular players, yes. The consistency of HPA — the same velocity shot after shot regardless of temperature, battery state, or how long you've been playing — is something you notice immediately once you've run it. There are no gearbox wear issues, no battery performance drop mid-game, and no cold weather gas problems. The upfront cost is higher, but the long-term running costs are lower and the performance ceiling is significantly higher. We've written a full comparison in our AEG vs HPA vs GBB guide.
Can I get HPA installed by you?
Yes. We offer INFERNO Gen2 and XTS engine installation, BLINC Bluetooth FCU setup, PSI tuning, and full servicing at our workshop at Skirmish Wycombe Airsoft in High Wycombe. We also accept postal send-ins from customers across the UK. See our HPA Tech Service page for details, or contact us on 01494 911990.
Ready to get started?
Browse our full range of HPA rifles, or if you're not sure where to start, read our complete HPA guide. Any questions — call us on 01494 911990 or email sales@titanforgeairsoft.com. We're players ourselves and we're happy to talk through your setup before you buy.