TM M40A5 M150 SPRINGSKU: 101ACT2014
Action Army Spring is designed with an irregular pitch spring that is easier to compress and reduces the stress on the piston. The "M" rating of a spring is often related to a general velocity rating imparted by the spring, in this case, "150" notes 150 meters per second, which converts to ~490 FPS, depending on internal part factors like compression efficiency.
· M150 for Tokyo Marui M40A5
· Material: Steel construction for durability and consistency
· Compatible with spring guides 7mm
· Velocity Rating: about 493 fps