FX Impact M3 Power Adjuster (FX10310)
This new FX Impact M3 Power Adjuster is compatible with the FX Impact MKI and MKII.
Where as the old model power adjuster just had about 6 power level from min to max (with 6 steps in between) this new model has 16 steps adjustment from min to max.
Due to the new shape and design it will also give you about 25% more preload space on the hammerspring, so more adjustment positions and more power tune possibilities for your FX Impact