Replacement T15 magazine springs

[Toestr]

I think the springs for the MCS Helix would probably work. I've seen a guy replace his TMC springs with those.

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[Seajay]

I'm having a heck of a time tracking down new springs. Mine are finally causing me issues on the V1 mags.

Anyone find an alternative for these springs? I primarily shoot FSR through them, I've been using the stock springs on the V1 mags for ages without issues, but a stronger spring would be fine.