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These are great little rifles. I have one and am shooting the JSB 15.89gr at 865fps. I have also installed the power plenum and pin probe but in hindsight should have left it stock as very little benefit due to barre length. It is lazer accurate out to 50m (55yards). My OEM magazine hates...

I have come to accept that each and every liner made by FX will like it’s own pellet and/or slug. The new superior liners have really improved the accuracy for slugs, but less so for pellets. My one Impact shoots H&N 27gr .217 out of 700m heavy liner at 983fps like a lazer. My best result at...

The best money I have spent on my Impact Mk2 to get speeds up at lower regulator pressures was to install the Fx pin probe and the dual transfer port. These after market items resulted in an increase of between 50-60fps without adjusting the hammer spring or valve. For my rifle I have found the...