Umarex Zelos Hammer Weight Hammer Weight:Brass 7gram Once there is pressure inside

Once there is pressure inside the action the valve will remain closed

FX Impack MK2

I have only test fitted this for the tactical tube version

1/8 bsp pressure gauge that is 25mm OD

CNC machined from 6061 T6 and blk anodized right here in USA

Umarex Zelos Hammer Weight Hammer Weight:Brass 7gram Once there is pressure insideCustom hammer weight machined for the Zelos. The brass tungsten hammer weight is needed to open the valve when using higher reg pressure or wanting longer valve dwell time. Increase in fps will vary depending on the setup. Ive seen up to 15fps with the brass and up to 30fps increase with the tungsten on my personal setup. Other mods like porting and larger valve will assist as well You will use your existing factory hammer spring and replace the