This is a 3 rounds rubber band gun made from chopsticks.
But it is impossible to release on true semi automatic.
Because when the trigger is pulled quickly, all bands will be released at once.

Semi Automatic 5 rounds gun, P003 TOSAKAR.

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The big holding hook is locked by the sliding bolt.

The holding hook's position of the last rubber band.

Quick-drying adhesive is penetrated into some moving parts.

Grip.

Small parts for setting.

TOSAKAR (Tosaka) means "COCKSCOMB" in Japanese.

Please watch the video.

YouTube video