Pocket Toy Gun Mini Gx4 Continuous Shell Throwing Macara Education Gun Model Soft Bullet Launcher BlowBack Airsoft Small Pistol

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