Umarex Zelos HP Brass Valve The kit comes in 2

The kit comes in 2 different lengths (380/500mm/600mm) and caliber (

FX Impact MK1

IF you prefer a custom weight reach out to me first before making the purchase

This adapter will replace the factory one that doesn’t have enough clearance to run a larger aftermarket moderator

5mm poppet w/stainless valve stem

Umarex Zelos HP Brass Valve The kit comes in 2Custom brass valve designed for high airflow high power. Swapping this over from the factory valve will yield 40 50fps depending on caliber, tune, and projectile. On my personal . 25cal w 700mm barrel it is making 73ft lb using this valve along with porting the action barrel. These are cnc machined from brass rod 360 grade and made right here in USA. Specs 7. 5mm valve bore 4x 6. 5mm ports 8. 5mm poppet w stainless valve stem Lighter valve return