Not only is this cool looking, but it works!
Flip the power on switch and it says "weapon activated" followed by a "power up" sound.
Press the "charge" button and the gun says "charging sequence activated" and
makes a charging sound for 20 seconds while the barrel fills with smoke. The gears on the side turn
and the whole gun begins to vibrate!
Once fully charged, it will fire laser pulses out thru the smoke filled barrel and produce a firing sound.