You will need: a knife, three different sized screwdrivers (for the three screw sizes), a hot glue gun (optional), glue, a straw (optional) and a Nerf DTB.
Step 2: Unscrew everything
Get rid of all the screws. There are two sizes holding the gun together, look at the picture for details.
Step 3: The internals
Take apart the gun. For the first part we will be working with the barrel turret thing. Lift it up, and a shaft will come with it. Leave leave everything else where it was, as most of the modification is with the barrel turret piece.
Step 4: Taking out the air restrictors (ARs)
There will be five screws that connect the black piece to the orange barrels. Unscrew all of them to get to the ARs. The ARs consist of three pieces: A 3 pronged piece (dispose), a spring (dispose) and a piece with a long stick on it. Break off the stick part, and using the knife, cut out the center to allow more air to flow through. Now glue them back onto the black thing to ensure a good seal.
Step 5: Increase airflow (optional)
At the front of the plunger tube is a little black piece in front of a spring. This piece directs air to the barrels causing a dart to be fired. However, due to the shape of this piece, a large amount of air is lost getting to the barrel. Cut a straw so it is no taller than the black piece and use a hot glue gun to glue it in the center of the black piece. Make sure that there are no gaps where air can escape (see second picture), and put the piece back in the gun. *Note* If this step is done incorrectly it could decrease rather than the increase the performance of your gun. That is why this step is considered optional.