Backdraft Phoenix - Build Your HPA Conversion Kit!
5.0
2 reviews
Reviews from verified customers who have purchased products at this store.
$249.99
KIT TYPE
FIRE CONTROL UNIT
HARNESS LENGTH
EXTRA HARNESS ($5 OFF)
EXTRA NOZZLE ($5 OFF)
Please choose
THIRD NOZZLE ($10 OFF)
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MAINTENANCE KIT
In stock
1
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drewdaugherty04
Morgantown,
United States
Jun 26, 2026
One of the best hpa engines on the market
Backdraft Phoenix - Build Your HPA Conversion Kit!
Product Details
When I got into HPA, a name-brand engine cost $300–400 before you even bought an FCU. CRAZY! So I made my own, and it turned out so good I just HAD to share it. Over 50 players have already left it a 5 star review, and if it’s not for you, you can return it with our 30-Day Field Test Guarantee!
— Aiden, Backdraft Innovations
Not sure which nozzle you need? Our nozzle calculator finds yours in about 30 seconds. Converting more than one gun? Add an extra nozzle in the options above for $20 ($5 off the $25 standalone price), or grab a third for just $15 ($10 off).
What it does
The Build Your Own Phoenix kit converts almost any airsoft AEG to HPA. You choose the parts that match your gun, and the Phoenix replaces the motor, piston and cylinder for faster trigger response, a higher rate of fire, adjustable power and far less maintenance. It drops into any center-line gearbox.
Specs & features
- Rate of fire: 40+ RPS
- Operating pressure: 40–145 PSI
- Design: open bolt
- Fits: any center-line gearbox (V2, V2.5, V3 and more)
- Nozzle: choose from 21 precision-machined nozzle lengths
FCU options
- Catalyst Gen 2 (included): safe, semi, full auto, binary, 2- and 3-round burst, set on 2 selector positions with the switch and buttons on the board. No app needed.
- Catalyst Wireless (+$80): tune dwell, delay and fire modes from your phone without opening your gun. Adds burst from 2 to 20 shots, ramping, a third selector position, and mag and tracer control.
Build your kit
- FCU: Catalyst Gen 2, Catalyst Wireless, or no FCU
- Trigger board: V2, V3 or LMG
- Nozzle: the length that matches your gun
In the box
- Phoenix HPA engine with your chosen nozzle
- Your chosen FCU (if selected)
- Your chosen trigger board
- Wire harness
- Inner grip line with brass quick-disconnect fitting
Compatibility
The Phoenix fits any center-line airsoft AEG gearbox. Confirmed fits include guns from Tokyo Marui, G&G, CYMA, VFC, A&K, ICS, JG, King Arms, Classic Army, Elite Force, LCT, ARES, S&T, PTS, Echo1 and CG. Check your exact model with the nozzle calculator.
FAQ
Will it fit my gun?
If your gun has a center-line gearbox (V2, V2.5, V3 and most others), yes. Pick the nozzle for your model with our nozzle calculator. We use Polarstar’s nozzle numbering, so if you know your Polarstar nozzle number, that’s your number.
Is it hard to install?
If you can use a screwdriver and follow a video, you can do it. Our install videos walk you through M4 and AK builds, and our Discord is there if you get stuck.
What else do I need to run HPA?
An HPA tank, a regulator and an air line. Want to try it before you buy a tank? Our Unlimited Air Adapter ($20) runs your gun straight off a home air compressor for testing and tuning.
What if something breaks?
We offer 24/7 tech support, and our Discord has real players who’ve done this install hundreds of times and are always happy to help. Reach out anytime and we’ll get you back on the field.
What’s the 30-Day Field Test Guarantee?
Try it in your gun for 30 days. If it’s not for you, send it back for a full refund. Read the full policy.
Good to know
- International customers are responsible for any customs fees.
- Import rules in some countries require semi-only electronics.
- Pay-in-4 is available at checkout.
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