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PolarStar Airsoft HPA F1 Version 2 Conversion Kit - G&G SR25 Cylinder

SKU: PS-F1-V2-SR25GG PolarStarIn Stock Map ProtectedPrice is map protected. Coupon(s) may not be applied to this item.

  • Stabilizes the BB in the hop up before firing
  • Features a live fire tuning system
  • Immediate trigger response without first round dry fire
  • FCU to adjust Key settings and meet field requirements
  • Capable of firing at a 2-9 round burst
  • F1 is made to be compact and efficient
  • Improves hop up performance with a wide range of stock and aftermarket options
  • Comparability between F1 and JACK system virtually identical
  • Single solenoid fired design
  • Removes any spin that may cause BBs to veer in a different directions at range.


PolarStar Airsoft HPA F1 Version 2 Conversion Kit - G&G SR25 Cylinder

The F1 is a great buy whether you're an experienced player or new comer to the airsoft world. A great way to change up your game, the F1 not only reduces the weight of your gun significantly, you'll be able to shoot faster than ever before! Control the ROF and adjust your trigger pull in semi-auto, the F1 features an easy drop in system to accommodate all V2 and V3 Gearboxes (based on model). Why worry about damaging your AEG's internals because of which battery it can handle? The F1 uses a 7.4 LiPo battery and does not inflict harmful damage to your rifle's internals. The best feelings you'll experience while running an F1 in your AEG is getting true reliability and air efficiency. The engine is able to last throughout the day problem-free. PolarStar has made it so anyone can use their products, so spice up your arsenal by making it compatible with HPA!

About PolarStar:

PolarStar Airsoft was formed in 2009 as a part of PolarStar Engineering & Machine with the goal of bringing our engineering experience and focus on quality to airsoft. Since then, PolarStar has made innovative airsoft products of the highest quality, designed and manufactured in the USA. PolarStar products, including the patented Fusion Engine are designed by airsoft players, incorporating airsoft experience with the feedback of the commnity.

In the Box

1X F1 Engine


1X Set of Wire Harness

1X Trigger Board

1X Manual


Brand Polarstar
Nozzle Type M4
Compatibility G&G SR25 AEG
Propellant HPA
Material Aluminum Alloy
Length 4" Inches

California Proposition 65 Warning: Cancer and Reproductive Harm -

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