So what you will need is:
Big Bad Bow
Long Shot Plunger Assembly
Dremel with cutting bit and sanding drum
Strong catch spring
thick adhesive like hot glue e putty
Optional hack saw
everything that you like to use to increase the seal of the longshot plunger assembly
Anything I forgot will be in the rest of the write up
So Lets begin with the plunger head and plunger rod. You will need these for it the plunger head from the Longshot and the plunger rod from the BBB.

First you will need to cut the plunger rod here.

So it should look like this.

After you cut the tip like so you will have to cut the fins off as shown in this picture.(Make sure you only do the big side ones)

Now how you will need to attach the plunger head is very simple. You will put the plunger head onto the plunger rod and drill a small hole.(it should be longer than the screw you use but have a decent smaller thread than the screw)

Then screw the plunger head on for now so you don't lose it.(yes I know that the wings are still on in this picture)

Now onto the shell work.
First thing you will need to do is sand down these ridges using your sanding drum until the Longshot PT fits into the shell evenly.

Now when you finish sanding the shell you can Glue the PT into place. I had put the PT into the shell pushed it all the way forward then glued the front first on just one side. I would highly suggest glueing it in on the none screw side.

Now you will need to cut the back shell where the picture shows. It is right below the bumps on the front.

Then glue in the the half of the shell that is on the side that you put you plunger tube in. It should line up right behind the plunger tube.(Mine is touching the back yours should to)

We are almost done now all we have to do is make the part that will prime the blaster.
You will need to take the Longshot bolt piece and hot glue in a 6 inch piece of 1/2 in cpvc as if you were singling a longshot. Wrap a decent amount of Etape around the base so it is almost a friction fit in the PT part.

Now put some springs onto the plunger rod and I had to create a spring rest but you may not need to if you have the one from your longshot that screws onto the PT. You will have to widen the hole a little bit thought.
How I made my spring rest. I used a bottle cap and screws through the shell to keep it in place.


Increase your catch spring.
Now put it back together and you are done.
Optional steps
make an rscb for it
hopper it
chopper it
integrate something to it
I added a RSCB

Thank you for looking. Please comment any thoughts suggestions ect. I am looking for a name to call it please comment any suggestions.
Edited by nerfbetter, 01 January 2014 - 11:35 AM.