[OVERKILL] Mass Impact Spring

Tokyo Marui EVOLT M4 exclusive: Inertia-specialized, 75% of stock ratio, low power design, low rate spring, low rate piston spring

[Product concept]
"Pull lightly, hit hard."
Our unique winding process solves the problem of power loss due to hop resistance, a problem with low-rate springs. This technical custom part achieves both optimal initial velocity and stable trajectory while maintaining the potential of EVOLT.

[Product Core: Variable Mass Design]
The biggest feature of this product is the "ultra-high density, tightly wound" section located on the piston side.

* Pseudo-piston weight effect: By tightly winding the end of the spring, the mass of the metal is concentrated at the rear of the piston, which increases the inertial weight of the entire piston and maintains the energy required to push the piston forward until the moment of impact.

* Low rate of return and high torque. While achieving a light pull (low rate of return), the inertial energy generated by the tight winding overcomes the resistance when passing through the hop-up packing. Even with a strong hop-up setting, the initial velocity remains stable, maintaining a sharp trajectory even when using heavy bullets or long-distance shooting.