An X shot Stealth. A Nitefinder like gun with an integrated squirt gun. yellow clip holds the water and it shoots the dart and water on the same trigger.
Inside. Wow that looks familiar
Take out the plunger tube. Get rid of that spring in front of the plunger head. that will extend the plunger travel.
There is the front and back of the plunger tube. It looks like the Nitefinder air restrictor, but without the spring part which blocks the airflow. I ran a drill straight through to open up the airflow. The whole area is glued together.
Resemble. Notice how the much further forward the plunger rod sits.
I didn't bother with the O ring, because it already has a perfect seal. The stock spring is pretty damm powerful, not C-836 levels, but its got some good power behind it.