Build a Gauss Rifle!

Build a Gauss Rifle!
  • Buy 5 for $28.95 each and save 4%
  • Buy 15 for $26.95 each and save 11%

Availability: In stock

Playing with magnets is irresistible, and it can also be a great learning moment. How many magnets will it take to launch a ball bearing, and how far will it fly? This kit provides a fun way to learn basic physics concepts.

Ideal for grades 4+

"My entire family enjoyed this project. We took the gauss rifle to a birthday party and every adult and child experimented with it. We had scientific questions being ask, hypothesis being created then tested! It was like being a part of a real science lab!"
- Jacquelyn




What can you do with magnets and ball bearings that makes a lot of noise? Why, build a magnetic rifle of course! Now, this rifle is not a weapon, but a fun way for you to learn a lot more about physics concepts, like momentum and magnetism. 

With this physics kit, you will see a magnetic field at work and use it to make a Gauss rifle. We’ve included enough neodymium magnets and steel balls to build a four stage Gauss rifle! Try different combinations of magnets and balls to see how the rifle’s final velocity varies.

Each kit contains: 

 4  Neodymium magnets
 10  Nickel-plated steel balls
 2  Wooden dowels

Instructions for this kit are available online, see Additional Information for links to the instructions and more.

You will also need from home:

- Wood glue
- Clear tape
- Plastic shoebox
- Sand, 2 cups
- Tape measure, metric
- A table with room in front of it
- Calculator with a square root function or you can calculate square roots using a free online calculator like
Additional Information


Instructions Instructions are available online: Build a Gauss Rifle Instructions

Please see our troubleshooting tips: Gauss Rifle FAQ's
Area of Science Physics
Grade Level Grades 4-5, Grades 6-8
NGSS Alignment MS-PS2-1, MS-PS2-2, MS-PS2-3, MS-PS2-5, MS-PS3-1, MS-PS3-2, MS-PS3-5

Customer Reviews 2 item(s)

We loved it
We loved it. My child worked very hard. The hypothesis that was thought was proven wrong. My child wanted to know how and did further research. Fun project.
Review by Sharon / (Posted on 5/26/2017)
this thing is awesome. ive made things like this out of knex pieces and this is basically the same thing, but instead of rubber bands, it uses magnets.
Review by michael k / (Posted on 8/18/2016)