How do i shoot a projectile from the player?

Im trying to make a gun that shoots a projectile to the desired mouse point. How do i do this? I dont really know how to.

I'd like it if someone could tell me an easy way to do this.

Have you read the raycasting article on the wiki? I recommend taking a look if you want to get started with building a simple gun. http://wiki.roblox.com/index.php?title=How_to_Make_a_Raycasting_Lasergun

*This is actually for a laser gun, not a 'bullet' gun.