With the FX Crown Slug Power kit you can get just a bit extra out of your FX Crown air rifle when you use 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. An important feature, as you can fine tune on one specific slug. The probe is not suitable for pellet use.
Another part in the FX Crown Slug Power kit that influences the speed is the tungsten hammer weight and spring guide and some small parts to assemble the complete set.