The Material:
Two NiteFinders
1/2" CPVC
1 1/2" CPVC coupler
2 1/2" CPVC Tees
2 1/2" CPVC Elbows
1 1/2" PVC coupler
Plexy Glass ( I Do not know the size I used , it was just some I had sitting around )
Plexy Glass I bought this at Lowes. I do not know the size of it but it was the thinest piece I could buy.
Hot glue and hot glue gun
Metal Bondo
Plumbers Goop
E-Tape
Some sort of industrial strength spring
Some sort of stronger catch spring( I do not know what I used, it was just a spring I had )
A pull back squirt gun from the dollar store ( I'm not sure if you guys can get one or not )
The Tools:
Demel with sanding bit, cutting bit, cut off wheel
Screw driver's
Now before we begin this mod I do have a warning for you all:
I highly suggest that you wear a face mask during all of the sanding.
Also something happened while I was uploading the pictures on to the computer.
I lost about 15 pictures, so I will try my best to explain the mod.
Now we BEGIN:
First here are are two NFs:

Now we need to take them apart and gut them until there is nothing left inside of them.
Take the O-ring off the second plunger rod and put it on the first plunger rod. Like this:

Now take both the plunger rod and cut them until they look like this:

Now of the second plunger rod cut off that nub is on the front of the plunger rod.
Now we need to connect the two plunger rods together.
Using the cutting wheel cut along those grooves in the plunger rod until it looks like this:

Do this to both of them.
Take some of that thin Plexy glass and cut it into 4 1/4" thick sticks by 2 1/2" long. After that take your
Dremel with the sanding bit and sand them down even farther until they fit inside the grooves and super
glue them in the grooves. Repeat on the other plunger rod. After you are done it should look like this:

Sand down the original catch spot until it is flush with the rod.
Now we need to make a new catch. Just compress the springs and and measure where the springs stop.
After that just cut down into the plunger rod and make a good size groove.
Now that we have connected them we can now put on a new pull handle.
Wrap some E-tape around the back end of the plunger ( not the end with the nub ) and put a 1/2" CPVC
Tee on it and goop it, like this:

Now that we are done with the plunger rod we can move onto the plunger.
Cut off the screw holes on the second plunger until they are flush with the plunger.
Wrap some E-tape around one end of the plunger and do the same on the second one.
Now take that dollar store water gun and cut about an inch or so and shove it on the first
plunger and shove the second on the other end. Now take your plunger rod and run it back
and forth a couple of times to make sure that you have the plunger's straight. Once you have
done that Goop the the two plungers together:

Every one knows the procedure for taking out the ARs but I came up with a different way
of adding a coupler to it. First take your ARs:

And cut out the middle on both of them:

Make sure that you cut the piece with the peg on it big enough so you can shove a 1/2" CPVC
coupler in it, make sure that it is as straight as possible:

After you have placed the coupler in the AR Goop it in place.
Now that the guts of the gun are pretty much done we can move to the out side.
On the second NF cut off its handle but do not cut off the screw hole.

As you can see in the picture the screw holes in the back are gone. When cutting the
holes out try to cut it as straight as you can.
On the first NF cut off the front of it until it looks like this:

You see the screw hole on top of the gun? Cut it off.
Now on both shells cut off the ammo holders
On the second NF cut the back end of the gun until it is straight:

Do this on both halves of the second NF.
On the first NF cut your self a piece of thin Plexy Glass and hot glue it to where the "laser" was:

Only put the Plexy glass on the bottom half of the first NF, do not put Plexy glass on the top half
of the first NF.
Now sand down the inside of the first NF until the new plunger can fit inside:

You also need to sand down the second NF so that the plunger can fit.
DO NOT POST YET!!
You also need to sand down the second NF so that the plunger can fit.
Now that the shells have been sanded so the plunger can fit we need to Goop them together.
Place the first NF bottom on the floor and place the second NF bottom right next to it. If they fit fairly close
together then you have sanded them down enough. Now this next part will take 2 days to do. Put some Goop
on the first NF where the Plexy glass is and shove the second NF up against it. Ok on the next day after the Goop has dried flip the the halves over and tape the down to like a piece of wood. Now along the seam of the two NFs place Goop all up and down that seam. After that has dried you can now start putting the internals together. Now put the industrial strength spring on the plunger and and put the original NF spring on the plunger
rod to. After that screw the internals back in and hot glue the them into place. Now don't be shy with the hot glue. Now we can add a ammo holder on the bottom of the second NF. Cut some thick Plexy glass and hot
glue it inside of the gun, like this:

Now cut your self about 1/2" of CPVC and hot glue some cardboard( or anything really ) on the bottom of it
and sand away the excess cardboard:

Now hot glue that piece of CPVC onto that Plexy glass. Now cut away some of the casing so you can get to the
ammo holder:

Now we need to replace that catch spring. I have know idea what type of spring I used but it was fairly strong and fit perfectly in that little nub on the catch plate.
Now we can screw the hole thing back together! YAY!!!
Once you have the gun back together cut your self some thick Plexy glass and hot glue it over the trigger hole on the second NF:

Now there is a gap at the top of the gun where the two guns meet. Fill that gap with hot glue.
Now its time for BONDO!!! Take about 3 inch's of CPVC and put it in where the ammo holder is.
This is so that the Bondo won't seep into the ammo holder.
Here is what it should look like during the Bondo-ing process:

Keep turning that piece of CPVC so it won't bond to the Bondo.
After the Bondo dries sand it down smooth and flush with the Plexy glass.
Now it is time for the stock.
Cut off the sides of a 1/2" CPVC Tee:

Now put the Tee under the cocker and hot glue it in place. Again don't be shy with the hot glue, that has to hold.
Now that part is done take your 1/2" PVC coupler and hot glue it on the top of the NF. Like this:

I cut the top piece of the stock to about 7 or 8" and I cut the bottom piece to about 6" and the middle piece is about 3 ".
You need to cut your self about 6" of CPVC for the barrel.
Now all it needs is a nice paint job. Paint it any color you like. I chose black cause it makes the gun look really cool:

Now take some sort of foam and hot glue it on the bottom right underneath the ammo holder:

Here is the front of the gun:

Now I bet your wondering about that gap on the front. That is for a MAG light. I would have put it in the Material list but I could not find the right size one.
Here is the gun with the stock off:

I bet you are all wondering about the range. Well it gets pretty good range.
I can get about 80-85'.
Here is a video me and my brother made: