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The FX Impact Slug Power kit gets that extra bit out of your FX Impact air rifle for shooting slugs.

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The FX Impact Slug Power kit gets that extra bit out of your FX Impact air rifle for shooting slugs.

Part of this kit is a 5.5 mm (.22) pellet probe that’s adjustable in length by means of an Allen screw at the rear. With included bushes that’ll slide on with an interference fit, the probe is also suitable for the calibre 6.35 mm (.25). The seating position, i.e. how far the slugs are pushed into the barrel, influences the accuracy and this adjustable pellet probe provides you with the means to experiment with that. This is an important feature, as you can fine tune on one specific slug. The probe is not suitable for pellet use.

Other parts in the FX Impact Slug Power kit that mainly influence the speed are a lighter valve return spring. This lets the valve stay open longer. Additionally, you get a hammer spacer. It will add extra weight to the hammer, while also increasing the preload on the spring. There’s also a buffer to protect the valve against the increased impact.

The extra speed that you can gain is about:
5.5 mm (.22) between 35 and 55 fps
6.35 mm (.25) between 50 and 80 fps


All parts are machined with very tight tolerances and the set is suitable for use in all variants of the FX Impact. When installing this kit on an Impact M3, you don’t need to use the spring and rubber ball.



.22 caliber adjustable pin probe with .25 caliber sleeve.
Lighter valve return spring – allows valve to stay open longer.
Two hammer weight spacers – allows more hammer spring compression and added hammer weight.


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