This is a 5 step tutorial on what to do!
Step 1. Get 15th prestige doing the SnD Glitch
Step 2. *You have to be level 50 ONLINE and able to prestige*
Step 3. Have a friend invite you to a player match
Step 4. Hover over prestige and click prestige up to the last step were it says their is no turning back! Do Not prestige yet
Step 5. Have your friend switch to combat training then prestige and their you have 16th prestige
*You will not loose the ability to buy gold guns* or anything just will rest your classes.