Version 2.1 of the hop-up alignment system, designed for M4 AEG HPA replicas using:
- PolarStar JACK engine (compact HPA engine with a dual-solenoid system and integrated electronic control, ideal for builds with limited space).
- PROWIN chamber (high-precision hop-up chamber with excellent bucking support and a design optimized for HPA).
This kit ensures perfect centering between the JACK nozzle and the PROWIN chamber, eliminating lateral variations that affect feeding and consistency. Fully compatible with ICS split systems and standard V2 gearboxes.
Compatibility
| Component | Compatibility |
|---|---|
| HPA Engine | PolarStar JACK |
| Hop-up Chamber | PROWIN |
| 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 for increased durability).
- Side clip for routing the JACK HPA tube/line.
- Front locking top cap specifically designed for the PROWIN 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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