Things You'll Need
Instructions
Carve out the center of the plastic bottle cap with a knife to form a plastic ring.
Attach the plastic bottle cap ring to the opening of the gun where you load the pellets and secure with hot glue.
Fill the plastic bottle about halfway with airsoft pellets. Raise the airsoft gun in the air and screw the bottle into the ring connector. Hold the gun and bottle sideways so the pellets do not fall out of the hopper.
Reinforce the hopper connection with a layer of electrical tape wrapped once around the water bottle and airsoft gun loading point.