Version 2.1 of the hop-up alignment system, designed specifically for M4 AEG HPA replicas using:
- PolarStar F1™ HPA Conversion Kit (universal drop-in engine for V2 gearboxes with programmable and highly efficient pneumatic control).
- MAXX Model chamber (high-precision CNC hop-up chamber optimized for HPA, offering excellent bucking support and consistent feeding).
This kit ensures perfect alignment between the F1 nozzle and the MAXX Model chamber, eliminating double-feeding issues and ensuring maximum consistency in high-performance HPA configurations. Compatible with ICS split systems and standard V2 gearboxes.
Compatibility
| Component | Compatibility |
|---|---|
| HPA Engine | PolarStar F1 M4 HPA Conversion Kit |
| Hop-up Chamber | MAXX Model |
| Base Replica | M4 AEG |
| Gearbox | V2 / ICS SPLIT |
What the kit includes
- Rear clip for mounting via rear pin or fixed stock.
- Base with housing for M3 inserts (optional brass).
- Side clip for routing the HPA tube/line.
- Front locking top cap designed specifically for the MAXX Model chamber.
- Rear plate with mounting point for an M5 screw (additional reinforcement).
Required components (not included)
- 4× M3 × 4.2 mm inserts
- 4× M3 × 8 SHCS screws
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