You can use this for nice target practice. And it works very simple.
Also see my other instructables.
Step 1: Simple Target
You need to build this 2 times.
Step 2: The Pices What You Can Hit
You have only to make this 1 time.
The orange connectors is what you have to hit.
Step 3: Put Some Pieces to Gather
put some pieces to gather
Step 4: The Finish
Make it don