The first thing I had to do was secure the SM1500 internals inside the AT3K case. I had a lot of problems with this because I had to do a lot of modification to the inside of the shell to accommodate the airtank. Another problem was the trigger. It was the hardest thing I had to do in this integration. The firing pin on the SM1500 tank was too short and needed to have a bend at the end for it to connect to the AT3K trigger. I ended up taking some random plastic from my parts bin and melting it with hot glue onto the end of the existing firing pin. After that I took an allen wrench and melted it to the other side of the plastic. It actually holds together very, very well. I have yet to have a problem with it. Here are some pictures of what I'm talking about.
I also decided not to keep the stock pump on this gun. Instead I wanted to utilize my new external tank I just made for a couple of my other guns. It actually works amazingly good with a small, single shot airtank. As long as you don't keep the trigger pulled for a while, not much air gets out. The external tank keeps a constant pressure in the smaller tank and takes a lot of shots until it is empty so you won't need to ever pump up your gun in a battle. The airtank hooks directly to the external tank through some vinyl tubing. It also has a quick disconnect so you can use the tank on different guns.
The next problem I had was integrating the Sonic Black Bazooka. This was pretty hard but worked out pretty good in the end. The problems I faced was getting the internals of the gun inside AT3K shell and creating some type of a trigger to fire the Blast Bazooka. I ended up cutting out a pretty big hole in the top of the AT3K case to get the Blast Bazooka in there.
After getting the inside of the gun big enough to accommodate the Blast Bazooka, I had to space it evenly so the barrel wouldn't be crooked and it wouldn't be rattling inside the AT3K case. I used some large FBR I had purchased for an earlier project that didn't work out. It worked perfect. I put 2 pieces at the beginning and the end of the case to "suspend" the Blast Bazooka in the AT3K case.
All that was left to do was make the trigger for the Blast Bazooka. The way the Blast Bazooka's trigger mechanism works is that there is a small button that is located on the top of the airtank that needs to be pushed down in order to release the air stored up in the airtank. I used a simple push button that I bought from McMaster-Carr to use for the project.
Part #70205K105
I then took a piece of an AT2K to use as the piece to push down onto the trigger of the Blast Bazooka. I took a little section of the pressure gauge thing on the Airtech 2000 and cut a small section of it. Then I filled it up with hot glue and screwed the button into the chunk of hot glue. It sounds confusing but quite simple. Should have taken some better pictures of it so you know what I mean. Here is a picture of the trigger.
After that all I had to do was screw everything back together. Here are a bunch of pictures I took of the completed product.
Questions? Comments? Feel free to post. I might add a paintjob to it later, but for now I'm glad I got the damn thing done.
