Materials and tools
Acrylic sheet - 5mm thickness
32mm bath plug
32mm PVC or 40mm downpipe
coupler of your choice. (I used a 15-25mm reducer)
a few small screws
Power drill/drill press
Here's our spring, plunger rod, plunger tube and shell.
I'm using an Oznerfnerd spring + stock LS spring at the moment and it's still easy to prime.
Here you can see the acrylic disk I'm using as the spring rest and the bath plug.
Since taking this photo I've inverted the bath plug to act as a skirt seal. This way I'm getting a flawless seal.
These are the washers I'm using and the screw. Almost any will do.
You can see here where I've dremeled the shell to fit the plunger tube. This step will take a while.
I actually used the hole saw to open up the front to give me a clean and perfectly circular cut.
Here's the completed plunger rod again.
Notice the bath plug orientation.
You may or may not have to trim the priming rod for it to fit. Since this picture was taken I have moved the PT even further forward negating the need to do this.
Here's some PT comparisons.
Definitely getting much better ranges now. Similar to a singled Tripleshot but with a slightly larger air output. Easily passing 120' flat at the moment with the Oznerfnerf and LS spring combo. I'm yet to try a hopper or RSCB on it.