The Stinger Paintball Launcher

This is a Stingray I that I converted into a launcher. It shoots the 1" Sniper shells. I had to modify the valve and got about 4 times the normal amount of gas flow to launch the shell. I also had to chop the front end of the gun, mount the 1" barrel and make it seal tightly to the valve assembly.

 Caution, if you choose to try this project you have a pretty good chance of totaling your valve body. Don't blame me if have to go buy a new one!. Mine worked, that's all I can say.

First I took the stock valve assembly and cut off the metal tube on the front and replaced the velocity adjustment screw with a shorter one that wouldn't impede the gas flow at all.  
I then took the internals out of the valve assembly and drilled out where the tube used to go in the front. Be careful, if you drill too big the O-ring will not seal properly on the inside and the valve body will be scrap metal. I'd start with a bit just a hair larger than the old air tube to get the remains cleaned out. Also, before putting the valve assembly back together make sure it is 100% clear of all metal shavings, dirt... etc.

  


  
This is the back end of the barrel. I took a 1" piece of PVC and ported it. I then got a 1/2" close galvanized nipple and threaded it into a piece of 5/8" Plastic tubing. To get it all together I had to warm up the PVC and "stretch" it a bit when I slid the shimmed pipe fitting in. It's permanently together with PVC primer / PVC Cement. The threaded nipple site out about 1/2" past the end of the 1 1/2" PVC  

I then put the internals back together and into the Stingray body. The next step was cutting off the body off about 1/2" down from where the valve body stops. You need this 1/2" of plastic to thread in the new barrel. 
 


You can see it a little better from this pic. To make the barrel able to thread in, I just gently heated up the Stingray body and threaded the new barrel. I left it in until it cooled. This cut decent threads so you can screw the barrel in and out.  The final steps were just putting everything back together and field testing it. It's not as powerful as a ball valve version but pretty easy to do and can shoot out the 1" shells 75+ feet. The nice thing is that the blowback action of the Ray still works so it recocks itself. Just drop in another shell and you're set.