Huma-Air High Flow Pellet Pin Probe for your FX Crown, to gain maximum airflow behind your projectile, great when you are shooting with slugs.
 
Specially for the FX Crown we made a High Flow Pin Probe so you can get the maximum performance out of your FX Crown, specially when you are using slugs.
We made a small tollerance modification for this current batch,  so it fits all models Crown perfectly.