Version 2.1 of the hop-up alignment system, designed specifically for ICS MPX/CXP HPA replicas using:
- Blackdraft Phoenix engine (compact and affordable HPA engine with excellent performance in SMG configurations).
- M-POWER chamber (hop-up chamber optimized for HPA with precise bucking adjustment).
This kit ensures perfect centering of the Phoenix nozzle with the M-POWER chamber within the compact ICS MPX/CXP platform. Fully compatible with the original ICS lower receiver, maintaining the structural rigidity of the ICS split gearbox system.
This template was created for Phoenix Beta, which was released before 2026, so if you need the 2026 version, just let me know and I'll put it together for you.
Compatibility
| Component | Compatibility |
|---|---|
| HPA Engine | Blackdraft Phoenix |
| Hop-up Chamber | M-POWER |
| Base Replica | ICS MPX / CXP |
| Gearbox | ICS split (compatible with ICS lower) |
What the kit includes
- Rear clip adapted for the ICS MPX/CXP stock system.
- Base with housing for M3 threaded inserts (optional brass).
- Side clip for routing the HPA tube in compact configurations.
- Front locking top cap specifically designed for the M-POWER chamber.
- Rear plate with mounting point for an M5 screw (additional structural reinforcement).
Installation and adjustment
1. Printing and preparation
- Print the parts with 65–80% infill.
- Lightly sand internal areas to ensure a perfect fit in the compact MPX/CXP chassis.
- Apply dry lubricant to contact surfaces if needed.
2. Installation in the ICS replica
- Insert the base into the original ICS lower receiver and install the M3 inserts.
- Mount the rear clip using the ICS folding stock mounting point.
- Install the M-POWER chamber with the inner barrel; the top cap locks the assembly and keeps everything centered.
- Route the Phoenix HPA tube through the side clip designed for the limited space inside the MPX/CXP body.
3. Final fixation
- Secure the rear plate using an M5 screw with washer for maximum rigidity.
- Verify that the Phoenix nozzle enters the M-POWER chamber centered, without lateral play.
- Perform dry feeding tests and adjust the Phoenix pressure according to your SMG configuration.
Required components (not included)
- 4× M3 × 4.2 mm threaded inserts
- 4× M3 × 8 SHCS screws
Lower receiver recommendations
Fully compatible with the original ICS MPX/CXP lower receiver (metal).
If you need universal printable alternatives for other replicas, the following Gearbox V2 Lower “Universal Lower Part” models are available:
- Version 3
- Version 4.2
- Version 4.3 MTW
Available here:
https://lab.sychev.xyz/prodcuts?q=universal
3D printing parameters
- Approximate print time: ~1 h 15 min (more compact parts)
- Recommended material: PLA+
- Layer height: 0.10 mm – 0.15 mm
Manuals
Installation and adjustment manuals are available in the Manuals section of the website or on the project’s Discord server.
Recommended products
The most recent models added to the collection