Modern Warfare 2 Assault Rifles - M4A1

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Click on the images above for a better view of the weapon.

Attachments

Grenade Launcher

This allows you to fire grenades. The grenade must travel a certain distance before it explodes on impact. You can also kill an enemy with an unarmed grenade, if it hits them.

Unlocked:
M4A1: Marksman I - Get 10 kills with this weapon.

Red Dot Sight

The Red Dot Sight replaces the weapon's iron sight. The RDS has a much better view and a bright laser dot in the center that allows for a quick aim.

Unlocked:
M4A1: Marksman II - Get 25 kills with this weapon.

Silencer

Makes the weapon more silent and reduces recoil. This attachment lowers the weapons range and damage over distance.

When you fire a silenced weapon, you won't show up on the mini-map.

Unlocked:
M4A1: Marksman III - Get 75 kills with this weapon.

ACOG Scope

Replaces the weapons iron sight for a telescopic sight. This gives a nice boost to the weapons range.

Unlocked:
M4A1: Marksman IV - Get 150 kills with this weapon.

FMJ

Full Metal Jacket bullets. Increases bullet penetration, thus allowing you to shoot through higher density cover.

This works just like the Call of Duty 4 Deep Impact perk.

Unlocked:
M4A1: Marksman V - Get 300 kills with this weapon.

Shotgun Attachment

Allows you to use a four round pump-action shotgun.

Unlocked:
M4A1: Shotgun - Get 20 kills with the Grenade Launcher.

Holographic Sight

The Holographic Sight is a little more accurate than the Red Dot Sight and the reticle is a bit different:


Unlocked:
M4A1: Holographic Sight - Get 60 kills with the Red Dot Sight.

Heartbeat Sensor

This is attached to the side of your weapon. You can track anyone that is in front of you, except for enemies that use the Ninja perk. Enemies are shown as red dots and friendlies as green dots.

Unlocked:
M4A1: Heartbeat Sensor - Get 15 kills with the Silencer.

Thermal Scope

Everything is shown as grayscale. Players glow white, except for those who use the Cold-Blooded perk. You can't see through walls/cover with this scope.

The Thermal Scope also gives a small boost to your weapons range.



Unlocked:
M4A1: Thermal Scope - Get 20 kills with the ACOG Scope.

Extended Mags

Increases the capacity of your weapons magazine, but it doesn't give you any extra ammunition.

Unlocked:
M4A1: Extended Mags - Get 40 penetration kills with the FMJ.

Camouflages

Desert

Unlocked:
Unlocked by default.

Arctic

Unlocked:
Unlocked by default.

Woodland

Unlocked:
M4A1: Expert I - Get 5 headshots with this weapon.

Digital

Unlocked:
M4A1: Expert II - Get 15 headshots with this weapon.

Urban

Unlocked:
M4A1: Expert III - Get 30 headshots with this weapon.

Blue Tiger

Unlocked:
M4A1: Expert IV - Get 75 headshots with this weapon.

Red Tiger

Unlocked:
M4A1: Expert V - Get 150 headshots with this weapon.

Fall

Unlocked:
M4A1: Expert VI - Get 250 headshots with this weapon.