M4A1 SOPMOD

The M4A1 SOPMOD (Special Operations Pecular MODification) is the Standard Issue SAS Weapon in Call of Duty 4: Modern Warfare. As opposed to the other M4 carried by the Marine Force Recon men, this weapon is well-suited to the covert operations of Bravo Team. It is equipped with a red-dot sight to help aid target-acquisition at close-range, as well as a suppressor and M203 Grenade Launcher. The weapon is also fitted with a PEQ-2 Laser designator, which projects a laser beam to help aim the weapon due to the difficulty in using the normal sights in combination with night-vision goggles.

For the first few missions after the Prologue, all Bravo Team carry the M4A1 SOPMOD. However, as the game progresses, Gaz is more often seen carrying a G36c, and Captain Price trades his red-dot sight in for an EOTech Reflex sight. Soap, on the other hand, retains the weapon for most missions, except the Prologue missions where he carries an MP-5, and the mission "Hunted" where he loses the weapon during a helicopter crash.