But this week I finished something I've been wanting to do for a while - a shotgunned Titan that's comfortable and actually practical. After seeing all the Mav-Titans people have done, I knew what I wanted to do.
Let's get started!
The first step is to disassemble both guns and dremel the crap out of the Maverick shell until a Titan tank will fit. It shouldn't take too much effort - the Titan tank is almost the same size as a Maverick's cylinder.

I epoxy-puttied a coupler onto the tank.
Next you rig the trigger. It's very easy to attach the Mav trigger to the Titan tank - I used the thick wire that was part of the Titan's original trigger mech, and bent it into shape:

Next, I made the removable stock. You need to drill/dremel a hole big enough for 1/2" CPVC here:

Then glue a 1/2" CPVC coupler here:

Then make a suitable stock for it, with CPVC at the end of the stock, to attach to the coupler:

Now it's time for the pump. Dremel the bottom of the shell so the pump has grooves to fit into. Attach the pump to the Titan Tank via vinyl tubing from the titan, (running tubing through the hole where the Mav's cylinder release button used to be) and plug the remaining two tubing nubs - one on the tank and one on the pump. I superglued some rubber plugs over them. Then you close up the gun, and hose clamp the pump onto the gun like so:

It you did a good job dremeling the shell so that the pump fits into it, then it will be rock-solid. If not, you might need to use glue or epoxy putty to keep it in place.
You should also make a handle for the pump. I used PVC and the foam from a bike's handlebars to make mine.
Now for the barrel(s). Put whatever barrel you want on it. For mine, I made a shotgun speedloader with two 1.5' lengths of 1/2" SCH80 PVC. I plugged the back of both barrels with a piece of crayola marker to make sure darts wouldn't fall out the back of the barrels. Each holds 7 darts, and the one not in use can easily be reloaded with picked-up darts at any time.


When it's all together, you should have something like this:

Part 2 in progress, don't post yet please.