Alloy Mini Ring Pistol Model Shell Throwing Soft Bullet Toy Gun Golden Finger Blaster Decompression Toys For Boys Adults

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