Here is a list of the Call of Duty 4 - Modern Warfare Classes and Weapons Perks. Each perk show which level you unlock them when playing the multiplayer xbox live onlin game of CoD4.
| Perk 1 | Level Unlocked |
| C-4 x2 Special Grenade x3 RPG-7 x2 Claymore x2 Frag x3 Bandolier Bomb Squad |
LVL: 1 LVL: 1 LVL: 2 LVL: 23 LVL: 41 LVL: 32 LVL: 14 |
| Perk 2 | Level Unlocked |
| Stopping Power Juggernaut Sleight of Hand Double Tap Overkill UAV Jammer Sonic Boom |
LVL: 1 LVL: 1 LVL: 20 LVL: 29 LVL: 38 LVL: 11 LVL: 1 |
| Perk 3 | Level Unlocked |
| Extreme Conditioning Steady Aim Last Stand Martydom Deep Impact Iron Lungs Dead Silence Eavesdrop |
LVL: 1 LVL: 1 LVL: 8 LVL: 17 LVL: 1 LVL: 26 LVL: 44 LVL: 35 |
