Lonex M140 Enhanced AEG Spring - 440-450 FPS
The Lonex M140 Enhanced AEG Gearbox Spring is a progressive non-linear style spring. The strong steel used in construction helps to increase the durability of this gearbox part so it won't wear down as quickly as stock springs will. Additionally, the design of the spring also helps to reduce strain on the battery to extend the time which you can play without swapping out batteries. With 0.20g BBs, this spring will generate a muzzle velocity in the range of 440 to 450 FPS