Call of Duty: Modern Warfare 2/Primary Weapons

Assault Rifles
The challenges for all Assault Rifles are the same.(MARS Sight is the same as Red Dot Sight) Veteran and Master Challenges are unlocked after Prestige 1 lvl 5. The titles and emblems shown are examples, and vary from gun to gun.

Submachine Guns
The challenges for all Submachine Guns are the same.
 * Note:Veteran and Master Challenges are unlocked after Prestige 1 lvl 5.

Light Machine Guns
The challenges for all Light Machine Guns are the same.
 * Note:Veteran and Master Challenges are unlocked after Prestige 1 lvl 5.

Sniper Rifles
The challenges for all Sniper Rifles are the same. Veteran and Master Challenges are unlocked after Prestige 1 lvl 5.