FX Tuning Hammer Spring 1308

Power Tuning Hammer spring for your FX DRS

This hammerspring has a bit more higher powercurve compared to the FX factory hammerspring what will give you more flexibility and power adjustment options.
It’s great when you want to tune your FX  for slugs or hybrid slugs and we prefer to use this spring over the factory spring when you use the powerplenum or slug power kit.