Nerf Rival Kronos Spring Spacer

Spring Spacer for Nerf Kronos/Heracles/Mercury (identical internals)

Increases spring compression for higher fps. around 15fps higher than stock for my blaster

7mm tall spacer. Highest that would still catch.

Unlike most spacers, this one Does Not install on the Plunger Head; instead it seats into the spring stop on the Frame/Catch side.
This allows it to be a simple ring instead of the complex shape of the plunger rod, and is a slight advantage in that there will be less moving mass on the plunger vs other designs.
-see photo for install location.

Important Note: different production runs of Kronos and its reshells have shipped with different springs - even within the same model!
You may need to Test and scale the z-axis to adjust spacer height for some variants.


Tip: Kronos springs are always under compression even when not primed
it is easier top reassemble the blaster by manually catching the spring during reinstall.