Slug Power Kit For FX Panthera, FX Dynamic, FX King and FX DRS

Slugs ask more of a rifle than pellets do. More mass to move, more bearing surface dragging on the rifling, and a need for the valve to stay open longer to keep pushing. This kit is FX's factory answer for the Dynamic, DRS, Panthera and King — two well-chosen changes that reset what your rifle can do with heavy projectiles.

At the heart of it is a tungsten hammer. Tungsten's density gives you consistent, harder power delivery behind heavier slugs — it cracks the valve open at regulator pressures where a standard steel hammer starts running out of authority, and holds it open longer once it's there. More air, delivered for longer, is exactly what a slug tune needs. 

The second half of the kit is the slug probe, and this is where accuracy lives. The probe ships pre-configured for 5.5mm (.22) slugs, and the included calibre sleeves convert it to 6.35mm (.25) and 7.62mm (.30). Two O-rings hold the sleeves securely in place with no air leakage. The multi-calibre pin probe also improves airflow and slug feeding — the pin design opens up the path behind the projectile rather than blanking it off the way a solid probe face does. 

Three calibres covered in one purchase is the practical win here. If you run a multi-calibre Dynamic or DRS and swap barrel kits, one Slug Power Kit follows you across all of them.

Everything needed for installation is included, except the tools. 

Fits the FX Dynamic, DRS, Panthera and King.