This mod applies to both the Green and Yellow versions. I haven't opened up the Blue, but I'm sure this mod can be applied to it as well.
Note: Some of the pictures are shitty since I'm using a shitty camera. I apologize.
Open up your stock blaster.
Here are some internal shots for reference.
Close up of the rotation mechanism.
So the first thing I did was basically gut the blaster. I'm removing the mechanical auto rotation mechanism. If it was an air-op 3k my plans would have totally changed. Keep in mind this blaster is pretty old and the plastic is brittle. The sound of the plastic crunching with the auto rotation mech would drive me crazy. You can keep your auto-rotation if you'd like.
First thing we're going to do is increase the pump stroke by a little.
You'll have to cut the track for the pump a little further back, to about that wall of plastic. I moved the pump back to increase the stroke. You'll also have to dremel/file down this part, which is where the pump will sit.
I also made the tubing external in case I want it to be semi-auto. I drilled a hole for the pump to fit through the shell. This is what it should look like.
Next, you'll need to cut down the pump handle. I used a hacksaw and cleaned it up with a dremel.
In order for the pump handle to go back further, you'll have to remove the trigger guard too. I didn't like it anyway.
Now onto modifying the turret. This is pretty easy and nothing different from re-barreling any other blaster. I did this turret a couple weeks ago, so I don't have any pictures of the process. I dipped to turret in near-boiling water to remove the solvent weld. If you're luckily, the solvent weld is mostly gone and you can pry it apart with your hands or a vise. Open up the back holes where you're barrels will be to either 1/2" or 9/16". Insert your barrel material of choice. I wrapped the PETG in some electrical tape to hold them in there.
I ran out of PETG, but more is coming in the mail this week. So at the moment it only has three barrels.
Strip your airtank until it looks like this.
Cut out a washer out of 1/4" thick rubber sheeting. You can use various combinations of materials for this part, but 1/4" rubber fits nicely between the tank and the turret.
Make sure you glue the spring on the firing pin. This gives you a better trigger pull and helps to release the air faster.
Since my tubing is external, I drilled a hole for the vinyl tubing in the faux tank.
Next, glue down the rotation mechanism like so. You can also choose to use a stronger spring for the rotation mechanism.
*Picture limit - do not post
Edited by Ryan201821, 07 January 2010 - 01:06 AM.