PolarStar Complete O-Ring Set, Fusion Engine, Black

Made by world-renowned airsoft company PolarStar, you’re guaranteed better airsoft rifle performance after installing this complete O-ring set. It’s only compatible with the PR-15 Fusion Engine, which is designed to improve performance and trigger pull customization characteristics.
Components will deteriorate over time and after use, but PolarStar sells this set to give your Fusion Engine a new lease on life. It contains all the O-rings needed to allow your Fusion Engine to regain functionality.
The rings are made of high-grade rubber for maximum sealing and performance. They last much longer than cheaper products. With these, your airsoft rifle will be better than ever.