Action Army Marui L96 M150 Spring

VSR-10 M170 Spring

M150 VSR-10 Double Step Spring

RMS Modular Spring 3+ J Spring RSS / TAC41 / SSG / VRS

Rapax HULK High Velocity Spring (4+ J) RSS / TAC41 / SSG / VRS

Rapax One (1J Spring) RSS / TAC41 / SSG / VRS

Marui M40A5 M150 Spring

VSR-10 M130 Spring

Rapax 2.8J Spring RSS / TAC41 / SSG / VRS