Materials
3.5 inches of 1/2" cpvc
E-tape
Dremel
drill
marker
exact-o-knife
15 minutes of your life
OK so lets get started. First you are going to want to pry of the priming bar. I used a claw hammer and it was very easy.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000213.jpg)
Next take out all the screws and open it up. Here is what it should look like.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000214.jpg)
Gut the internals, I chose to gut the electronics also but you can leave them if you want.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000215.jpg)
Next make a mark at least 5/8" from the back of the barrel.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000216.jpg)
Then mark off a slot big enough for your dart to fit into plus an extra half an inch or so. Cut out the slot with a dremel.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000216.jpg)
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000217.jpg)
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000218.jpg)
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000219.jpg)
Now clean it up a bit with some sandpaper and an exact-o-knife
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000222.jpg)
Next drill a hole in the shell big enough for your dremel's sanding drum to fit through. It should go on the little ridge in the front of your shell. You can kinda see it in this picture. It is to the left of the hole I drilled.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000224.jpg)
Put your plunger assembly in the gun and put the two halves together. Dremel a slot in the shell big enough for you to be able to place the dart in the old barrel.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000225.jpg)
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000226.jpg)
Now take your 3.5 inches of cpvc and wrap it in e-tape till it fits nicely in the stock barrel. It should be able to slid back and forth and if you push it all the way back, cover the barrel with your hand and blow into the plunger tube you should loose no air.
Breech open
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000227.jpg)
Breech closed
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000228.jpg)
Wrap the plunger head in e-tape and lube it up.
![Posted Image](http://i742.photobucket.com/albums/xx64/thedom21/P1000229.jpg)
Put everything back where it goes and screw the gun back together.
Final thoughts, this was a really simple mod. I am satisfied with the range. It gets about 55-60 flat but that is not official since there is 3 and a half feet of snow on the ground. I did this by shooting down my sidewalk and counting how many posts I passed on my fence since each post is 5 feet apart. It averaged out to be about 55-60 feet with single bb darts.
Questions? Comments? Flames?