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PolarStar F1 + ICS MY-09 · Alignment Kit V2.1 · ICS MPX/CXP HPA
PolarStar F1 + ICS MY-09 · Alignment Kit V2.1 · ICS MPX/CXP HPA

PolarStar F1 + ICS MY-09 alignment kit for ICS MPX (v2.1)

23,00 €
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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/categoria/hpa-lower

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.

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Frequently asked questions

What material and dimensions apply to PolarStar F1 + ICS MY-09 alignment kit for ICS MPX (v2.1)?

The public product data does not declare a material or finished dimensions for this design. Check the images, downloadable files, and the exact manufacturing or printing setup before producing it.

What is PolarStar F1 + ICS MY-09 alignment kit for ICS MPX (v2.1) compatible with?

The published tags and categories identify this design with ics mpx, ics cxp, polarstar f1, ics my-09, hpa, airsoft. Confirm the exact platform, revision, and mounting points before ordering.

How do I install or prepare PolarStar F1 + ICS MY-09 alignment kit for ICS MPX (v2.1)?

Read the installation notes in the product description, inspect the supplied files and images, and test alignment before final fastening. The required tools, fasteners, printing parameters, or post-processing depend on the specific build.

What are the real-world uses for PolarStar F1 + ICS MY-09 alignment kit for ICS MPX (v2.1)?

This design is intended for projects related to ics mpx, ics cxp, polarstar f1, ics my-09, hpa, airsoft. It is useful for a compatible repair, conversion, prototype, replacement, or custom build when the published fitment and project requirements match.