blackdraft phoenix prowin alignment kit v2 1 ics mpx

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 an excellent price-to-performance ratio).
• PROWIN chamber (high-precision hop-up chamber optimized for compact submachine gun platforms).

This kit ensures perfect alignment between the Phoenix nozzle and the PROWIN chamber, adapted to the compact geometry of ICS MPX/CXP platforms. Fully compatible with the original ICS lower receiver and ICS split gearbox systems.

---

Compatibility

Component	Compatibility
HPA Engine	Blackdraft Phoenix
Hop-up Chamber	PROWIN
Base Replica	ICS MPX / CXP
Gearbox	ICS SPLIT (compatible ICS lower)

---

What the kit includes

• Rear clip optimized for the ICS MPX/CXP rear body pin or fixed stock.
• Base with housing for M3 threaded inserts (optional brass for durability).
• Compact side clip for routing the HPA tube/line.
• Front locking top cap specifically designed for the PROWIN chamber.
• Rear plate with mounting point for an M5 screw (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 within the compact MPX/CXP receiver.
• Apply dry lubricant on sliding surfaces to facilitate installation in tight geometries.

2. Installation in the replica

• Insert the base directly into the original ICS lower receiver (no modifications required).
• Mount the rear clip using the ICS OEM rear body pin.
• Install the PROWIN chamber with the inner barrel; the top cap locks the assembly while adapting to the compact MPX/CXP geometry.
• Route the Blackdraft Phoenix HPA line through the side clip designed for the limited internal space.

3. Final fixation

• Secure the rear plate using an M5 screw with washer for maximum stability.
• Verify that the Phoenix nozzle enters the PROWIN chamber perfectly centered without lateral play.
• Perform feeding tests considering the compact internal layout of ICS MPX/CXP platforms.

---

Required components (not included)

• 4× M3 × 4.2 mm threaded inserts
• 4× M3 × 8 SHCS screws

---

Lower receiver recommendations

This kit is 100% compatible with the original ICS MPX/CXP lower receiver.

If you need printable alternatives for Gearbox V2 builds, the following Gearbox V2 Lower “Universal Lower Part” models also work:

• 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 (compact geometry)
• 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.