Delrin ring for G&G SR-25 fusion engine. This ring is placed at the front of the Fusion Engine cylinder so that the HPA version 2 system has the same length as the original SR25 G&G gearbox so that it can be used with an original M4 chamber.
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Product Details
- Type
- SR25
- HPA System
- Polarstar Fusion Engine
- Material
- Polymer
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.
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