Signature Series Under Barrel Pauntball Launchers

I went through 3 revisions and finally came up with a design and functionality that I liked. These are 14-18" long are an all in one Co2 based launcher with a 1.5" barrel. The gas supply is a standard 1/8" NPT fitting meant to attach to the same air supply as the marker it's mountes on. I have written up a plan for these but it's in my private archives. Here are the pics of final designs. 
 

After making a few I made some revisions. The top one in the picture below is a similar design to the ones above with the same internals. I had added my former logo and 3 coats of semi-gloss clear coat. It's a lot more durable. The second I used a bigger ball valve and larger expansion chamber. Same finish. Also shown are the attached barrel mounts.