This is a mount for putting a laser pointer on a Nerf JOLT dart gun. The pointer-thing on the top is an actuator to push the On/Off button on said laser pointer.

Very basic. Use hot glue or something equally simple to attach it. Stick the laser pointer in the hole and shove the button under the pointy-thing to turn it on. Use it to shoot your brother, your dad, your sisters, that irritating neighbor kid, random houseflies, etc.

Enjoy! JRManx