PolarStar Input Fittings for Drop-In Cylinder Kits

PolarStar Input Fittings for Drop-In Cylinder Kits (Includes O-Ring)

The PolarStar Input Fitting for Drop-In Cylinder Kit is a critical HPA interface component designed to deliver a secure, efficient air connection for high-performance builds. Engineered with 1/4-28 threading, this precision barb fitting ensures reliable integration with PolarStar F2, F1, and JACK cylinder systems, making it a must-have replacement or upgrade part for maintaining consistent air delivery and system performance.

Built for durability and airtight sealing, this fitting includes a pre-installed O-ring, helping prevent leaks and maintain optimal pressure stability under demanding conditions. Whether you’re rebuilding a system, replacing a worn fitting, or assembling a fresh HPA setup, this component ensures a tight seal and dependable connection to your air line (sold separately). Its universal compatibility across multiple PolarStar engines makes it a versatile and essential part for any serious HPA technician or enthusiast.

Designed for precision fitment within drop-in cylinder kits, this fitting plays a key role in the overall airflow efficiency of your system. It is important to note that while it works seamlessly with F2, F1, and JACK platforms, it is not compatible with Kythera systems, ensuring correct application and avoiding installation issues.

For dependable air delivery and consistent HPA performance, this PolarStar input fitting is a small component that makes a critical difference.

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The PolarStar Input Fitting is most commonly used when servicing or upgrading HPA-powered gel blasters and airsoft platforms using drop-in cylinder kits. It provides a direct connection point between the internal Air Input Line and engine, ensuring efficient air transfer and leak-free operation.

For technicians and advanced users, replacing worn fittings or damaged O-rings with this OEM component helps maintain consistent FPS, stable pressure output, and overall system reliability—key factors in competitive or high-performance builds.