Lonex M90 Enhanced AEG Spring - 290-310 FPS
Stock AEG gearbox springs have a tendency to wear down quickly with continued use. The progressive non-linear design and the strong steel used in construction of the Lonex M90 Enhanced AEG Spring means it is much more durable than stock springs and will last much longer without wearing down. This AEG spring will also reduce stress on the battery and increase play time and generate a muzzle velocity around 290-310 FPS, making this a great choice for indoor CQB ranges.