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Complete set of o-rings with High grade rubber
Compatibility: PolarStar F1 HPA engines
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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Vanno bene per il jeak polastar
Hello , no it is not compatible .
Regards,
