This mod guide will show you how to remove the air-restrictor and replace the spring, both of which dramatically increase the range of your vulcan. First remove the screws on the main casing. Do not waste time on the barrel section, as its casing is not connected to the main body. Then, remove the carrying handle by prying the orange end-caps off. Unscrew the two screws that are in the hinge of the jam door and knock out the locking tubes. The cocking handle will come off with some gentle prying. Don’t forget to take out the batteries.
Once everything is unscrewed, pull up the side casing slightly and reach underneath and yank the battery spring connection out of its holder. With the wire disconnected, lift the casing completely off. Now, you will unscrew the two white covers and the square orange piece, making sure to unhook the small spring.
With some wiggling the plunger tube can be pulled out. Take out the two screws on top of the plunger tube and pull it off. The air restrictor and its spring will pop out. Next take a small flat head screwdriver and gently knock out the air grate. Put the plunger back together and set aside.
Turn the vulcan over and remove the screw inside of the cocking bar hole. With the gun right-side up pull out the cocking bar and the rotator bar as pictured. You can now pull the plunger out.Hold down the spring with one hand and take out the screw holding the plunger head on.
Next put back in the rotation bar then put back in the cocker bar. Replace the plunger tube with its small spring and washer. Finally put on the two firing mechanism covers and the orange rectangle, then screw down. Also, don’t forget to hook up the small rotation spring. Put back on the casing and screw together, and replace all the handles, cocking grip, and jam door. That’s it, you’re done. (note) I took out the dart posts so the belt can take streamlines.