Minecraft Cow Launcher

Step 1: Starting

Make a 3x3x3 cube

Step 2:

Add two collums

Step 3:

Add two regular pistons

Step 4:

Add two more

Step 5:

Fill in the blank spots

Step 6:

Add blocks around the launcher

Step 7:

Add levers behind the pistons

Step 8:

Close the pistons and add cows

Step 9:

Close the piston

Step 10:

Finnally open the other piston and watch as the cows get launched