polarstar f1 ics my 09 alignment kit v2 1 ics mpx cxp

Version 2.1 of the hop-up alignment system, designed specifically for ICS MPX/CXP HPA replicas using:

• PolarStar F1 engine (compact drop-in HPA engine with an efficient pneumatic system).
• ICS MY-09 chamber (original ICS hop-up chamber optimized for compact platforms).

This kit ensures precise alignment between the F1 nozzle and the MY-09 chamber, eliminating lateral play and improving feeding consistency in HPA configurations for MPX/CXP platforms. Fully compatible with the original ICS lower receiver and ICS split gearboxes.

---

Compatibility

Component	Compatibility
HPA Engine	PolarStar F1
Hop-up Chamber	ICS MY-09
Base Replica	ICS MPX / CXP
Gearbox	ICS SPLIT (compatible with original ICS lower)

---

What the kit includes

• Rear clip for mounting via rear body pin or fixed stock.
• Base with housing for M3 threaded inserts (optional brass).
• Side clip for routing the HPA tube/line.
• Front locking top cap specifically designed for the ICS MY-09 chamber.
• Rear plate with mounting point for an M5 screw (additional reinforcement).

---

Installation and adjustment

1. Printing and preparation

• Print the parts with 65–80% infill.
• Lightly sand internal areas to ensure a perfect fit with the ICS lower receiver.
• Apply dry lubricant or wax on sliding surfaces.

2. Installation in the replica

• Insert the base directly into the original ICS lower and install the M3 inserts.
• Mount the rear clip aligned with the MPX/CXP rear body pin.
• Install the ICS MY-09 chamber with the inner barrel; the top cap locks the assembly while keeping everything centered.
• Route the PolarStar F1 HPA line through the side clip for a clean internal layout.

3. Final fixation

• Secure the rear plate using an M5 screw with washer for maximum rigidity.
• Verify that the F1 nozzle enters the MY-09 chamber perfectly centered without lateral play.
• Perform dry feeding tests and adjust the F1 pressure as needed (45–120 PSI recommended for MPX builds).

---

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 lower receiver used in MPX/CXP platforms.

If you require a printable universal lower for other builds, the following Gearbox V2 Lower “Universal Lower Part” models are also compatible:

• 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 30 min
• 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.