Rapax One (1J Spring) SRS / TAC41 / SSG / VSR A high-quality spring machined in Europe by Rapax for SRS, VSR, TAC41, SSG, and similar sniper rifle replicas. Characterized by a lighter pull, the 13mm outer diameter spring comes with an approximal power output of 1J, meeting the Irish and Italian regulations for airsoft. The product is CNC coiled from high-quality wire, tempered, and furtherly electroplated. This technological process guarantees resistance to rust, reduction of friction, and negligible FPS/Joule loss over time.