9MM UPGRADE SPRING FOR SNIPER RIFLES -M150 (500 FPS)

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  • £9.98

New upgrade spring for bolt action sniper rifles. Made of steel spring wire, blackening surface, thermal treatment. Ends of the spring are grounded in. Older AirsoftPro springs were a little bit "over-scaled". These new springs better match to its nominal value.

Please note this is an upgrade spring with an outer diameter of 12,8mm and inner diameter 9mm. It is suitable for upgraded pistons which a larger inner diameter!