50 cal machine gun mock up for rigging tutorial

This is a simple .blend file containing a mock up of a 50 cal machine gun for use with the "Rigging and firing a 50 cal machine gun" tutorial.  It is meant just as a way to easily follow along with the rigging process.  That way you can apply the method to any kind of gun, from a laser cannon to a fully auto potato blaster!  Included are also the ammo belt, and a separate link and shell casing to use in the particle emitters.  I hope this helps.