Mini Model Gravity Straight Jump Toy 3d Printed Gun Non-Firing Cub Kids Stress Children Relief Toys Wedding Party Supplies

The child is happy. Works on batteries, it's more fun with them, but it also ejects cartridges without them.

How do I charge it? No instructions, no description, just a piece of metal.

Thank you very much son very satisfied

Didn't like the bullets

Thanks

Thanks