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12/08/2025
christopher b.
Chris
I have in my possession an ics cxp 12.5 inch replica m4 with the spring M120 the power it was 1.55 joules-345 fps with 0.28g bbc and I changed the spring with sp150 and the power it’s only little bit increased to the 1.63 joules - 357 FPS with 0.28g BBC . I thought it would be stronger.