 
The TAR-21 is a weapon in some custom maps as well as Modern Warfare: Death Squad and Modern Warefare: 2. It can be bought off the wall in some zombie maps for 1500 points. It can be bought only from the mystery box in Brutal Warfare with 450 spare rounds, and a 50 sized clip. When pack-a-punched, it becomes the TAR-115 gaining a 75 round clip, even faster rate of fire, dual extended mags, red-dot sight, A Master key, and 15% more power.