How to Make a LEGO Wii Zapper

Assembling the Barrel

• 1

  Build a platform for the Wiimote out of flat plates. Make this platform as long as the battery hatch on the remote, and at least one stud wider than the remote on all sides (about 7 studs wide).

• 2

  Build a small front plate at least 4 studs long and 7 wide. This will fit under the front of the remote, with the same 1-stud margin as in the rear. Place the remote in position on two plates to verify the remote is level.

• 3

  Build walls surrounding the remote, connecting the two plates. Make the walls a solid three bricks high. Leave a 3-stud-wide gap at the rear for the Nunchuk attachment and at the front for the IR sensor.

• 4

  Lift the Wiimote out of the housing and place some 1-stud-wide plates inside along the side walls on the rear platform. These will hug the contour of the remote while inside the shell.

• 5

  Place 1-stud-wide plates cross the front and rear channels.

• 6

  Take eight 1-by-2-stud plates and place them in pairs along the side walls. Place two above the directional pad, two between the A button and the Home button, two between the Home button and 1 button and two more over the rear Wii logo.

• 7

  Place 2 layers of plates across the Wii remote at the points with 1-by-2 plates. Leave the buttons accessible. These support plates will hold the remote in place securely.

• 8

  Build up the wall between the support plates, then lay 1-stud-wide plates around the wall, covering the support plates and holding them in place.

Building a Trigger Assembly

• 9

  Find two 10- or 12-stud-long Technic rods and three 1-stud-wide bricks with holes in the side. Flip your remote housing over.

• 10

  Find two Technic pieces to pull the B button backward. Use pieces with the cross connections on them, so you can attach them to the rods without moving. Put them in place over the B button gap.

• 11

  Make a slide return piece behind your trigger pull. Find a thin Technic strip at least 5-slots long and thread it onto the rods behind and perpendicular to the B button pull. Hold it in place with Technic bolts and then attach two pins to the ends.

• 12

  Thread one of the bricks onto the rods before the trigger pull, and one of them afterward. Install these bricks on the gun barrel around the B button gap. Test that the rods slide backward and pull the B button with them.

• 13

  Build a trigger on the rear of the rods. Make one that is comfortable and easy to pull.

• 14

  Attach the last brick to the end of the trigger rod assembly.

• 15

  Find and install two 1-by-2-stud bricks with side holes on the front plate. Place Technic pins through these holes and use elastic bands to connect those pins to the slide return.

Attaching a Handle

• 16

  Build up walls around the trigger assembly, making sure you don't impede its motion.

• 17

  Cover the trigger assembly with a flat plate.

• 18

  Build a gun stock onto that plate that is comfortable and easy to use. To make a more comfortable handle, use rounded edges rather than square edges and make it at 4 or 5 studs wide.