PolarStar JACK Nozzle No.1

PolarStar JACK Nozzle No. 1

Selecting the correct nozzle is one of the most critical steps when installing or servicing a PolarStar JACK HPA engine. The PolarStar JACK Nozzle No.1 (#1) is a genuine OEM replacement component manufactured to precise factory tolerances, providing the correct nozzle length for compatible platforms to maximise feeding reliability, air efficiency and FPS consistency.

Unlike conventional airsoft nozzles that are often named after a particular rifle, PolarStar uses a universal numbered nozzle system because different manufacturers frequently use slightly different gearbox and hop-up dimensions, even on replicas of the same firearm. As a result, multiple brands of identical rifle platforms may require different nozzle lengths. The No.1 nozzle is most commonly used with Tokyo Marui Spec M4/M16, A&K PKM, Tokyo Marui MP5 A/SD, ICS MP5 A/SD, and G&G KAC SR-25E2 replicas, although compatibility should always be confirmed before installation.

Manufactured from durable Delrin polymer, the No.1 nozzle offers excellent wear resistance, low friction and long service life. Its precision-machined dimensions provide a reliable seal between the JACK engine and hop-up chamber, helping reduce air loss while promoting smooth and consistent feeding.

The No.1 nozzle features a 20.95 mm (0.8245 inch) tip length and an overall length (OAL) of 42.6mm (1.677 inch), matching PolarStar’s published factory specifications for this nozzle size.

Whether you’re replacing a worn nozzle, repairing an existing HPA build or completing a fresh JACK installation, the genuine PolarStar No.1 nozzle delivers the factory fit and dependable performance expected from a premium HPA system.

Why Choose the PolarStar JACK Nozzle No.1?

The nozzle plays a vital role in aligning correctly with the hop-up chamber while maintaining an efficient air seal throughout every firing cycle. Installing the correct nozzle length improves feeding reliability, enhances shot-to-shot consistency and helps maximise the efficiency of your HPA engine. Genuine PolarStar nozzles are manufactured to exact factory tolerances, making them the preferred choice for servicing and upgrading JACK HPA systems.

JACK Centerline Nozzles: TIP = F + B – (A/2) – 2.3mm (0.0875 Inch)

Whether you’re replacing a worn component or completing a fresh HPA conversion, the genuine PolarStar JACK Nozzle No.1 provides the precision fit, dependable air seal and consistent feeding required to keep your PolarStar JACK system operating at peak performance..

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Alternative Product Names

• PolarStar JACK Nozzle #1
• PolarStar JACK Nozzle No.1
• PolarStar Nozzle 1
• PolarStar JACK Replacement Nozzle No.1
• PolarStar HPA Nozzle #1
• JACK Engine Nozzle No.1
• PolarStar Delrin Nozzle No.1

Manufacturer Reference

• Manufacturer: PolarStar
• Engine Platform: JACK
• Component Type: Replacement Nozzle
• Nozzle Number: No.1
• Material: Precision Delrin
• Tip Length: 0.8245″
• Overall Length: 1.677″