Make a Nerf Gun Into a Airsoft Gun

First you will need a nerf gun of any type, next you need a nerf bullet and a pen, then you will need a pair of scisors and airsoft bullets. you need to pull of the ends of the pen and the tip of the nerf bullet. now you have to and you can just throw those away. ok your almost done now you need to push the pen into the bullet and cut of the extra pen on the edge put it into your nerf gun and but a airsoft bullet load the gun and shoot.