Lonex M110 Enhanced AEG Spring - 350-380 FPS
Stock AEG springs generally tend to be low quality. As the coils continuously expand and contract they loose elasticity and wear down relatively quickly. As a result, your muzzle velocity and overall performance will suffer. The Lonex M100 Enhanced AEG Gearbox Spring uses non-linear steel that resists operational wear and retains elasticity for a much longer period of time, while generating a muzzle velocity of 350-380 FPS (w/ 0.20g BBs). The design of this gearbox spring also helps to minimize unnecessary stress on the battery and stabilize the muzzle velocity generated by your AEG.