HPA Parts

The Compact Regulator High Pressure spring is compatible with both first and second generation Micro Regs as well as the UGS and CGS systems. Chang...

Complete o-ring set for Centerline version of the F2 (does not include offset versions). 1x M1.5 x 10.0 (Buna 70) - Outside of Nozzle1x M1.0 x 5.5 ...

Complete screw set for Version 2, GEN3 Fusion Engines.

The R107 is the solenoid valve used in all current production Fusion Engines and is backwards compatible with all production engines back to the GE...

Features Convert your standard Ver2 Fusion Engine to be compatible w/ Ver2 Extended receivers (such as SR-25 rifles) The A&K SR-25 Spacer Ki...

The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. Th...

The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. Th...

The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. Th...

The air nozzles for the Fusion Engine come in up to 6 different colors which identify how much the nozzle restricts air flow out of the engine. Th...

Features Foster 23-2 QD works with all PolarStar Air Rigs Assembled with 6mm x 1/8PTC fitting to interface with standard 6mm airline Male Quick ...

Valken tank o-rings are a reliable and durable replacement o-ring for CO2 tanks or screw-in compressed air tank regulators.

The Poppet Valve is the part which controls air flow through the Fusion Engine™. The valve is available in different levels of restriction to limit...

TechT Gun Sav Grease has been used exclusively by PolarStar for over a decade and is the grease we recommend to lubricate all of our HPA engines an...

For cylinder conversion systems we assign numbers to the nozzles instead of using the rifle model. This is because the nozzle length can vary betwe...

For cylinder conversion systems we assign numbers to the nozzles instead of using the rifle model. This is because the nozzle length can vary betwe...

The F2™ poppet valve is available in two levels, Red and Gold. The Red valve is the standard valve that comes in the F2 and provides the maximum am...

If you are someone that has always wanted to have the performance and versatility of an HPA system but just couldn't bear the thought of being teth...

Features Aluminum alloy construction Drop-in replacement part Fits MicroReg Gen2 micro air rigs Made in the USA Manufacturer: Polarstar Specifica...

Complete o-ring set for all models and generations of the Fusion Engine.(All o-rings are 70 durometer with the exception of the poppet base which i...

Replacement O-rings for your INFERNO Gen 2 engine. Does not include O-rings for solenoid valves. Includes 1 x 10.5mm (x1) 1 x 13mm (x3) 1.5 x 18mm...

Complete screw set for Version 2, GEN2 Fusion Engines.

In the majority of installs your system's air line can be routed through the gearbox without issue, but in some cases you might find that the line ...

The BV309A Bullet Valve is the solenoid used in all current production F2 and JACK HPA systems and it is backwards compatible with all F2 and JACK ...

The small parts kit includes the original trigger, trigger spring and complete safety lever assembly for the V2 Fusion Engine. Compatible with GEN...