Primary Weapons

Call of Duty: Modern Warfare 2 Multiplayer Guide

Primary Weapons

Assault Rifles

M4A1 - Auto, unlocked at Level 4
FAMAS - 3 round burst, Level 4
SCAR-H - Auto, Level 8
TAR-21 - Auto, Level 20
FN FAL - Semi-auto, Level 28
M16A4 - 3 round burst, Level 40
ACR - Auto, Level 48
F2000 - Auto, Level 60
AK-47 - Auto, Level 70

Attachments for the ARs:
Grenade Launcher (10 Kills)
Red Dot Sight (25 Kills)
Silencer (75 Kills)
ACOG Scope (150 Kills)
Full Metal Jackets (300 Kills)
Shotgun (20 Grenade Launcher Kills)
Holographic Sight (60 Kills while looking through the Red Dot Sight)
Heartbeat Sensor (15 kills with silencer)
Thermal Scope (20 kills while looking through an ACOG Scope)
Extended Mags (40 bullet penetration kills with FMJs)

Sub Machine Guns (All Full Auto)
UMP .45 - Unlocked at Level 4
MP5K - Level 4
Vector -Level 12
P90 - Level 24
Mini-Uzi – Level 44

Attachments for the SMGs:
Rapid Fire (10 Kills)
Red Dot Sight (25 Kills)
Silencer (75 Kills)
ACOG Scope (150 Kills)
FMJ (300 Kills)
Akimbo (30 Kills with Rapid Fire)
Holographic Sight (60 Kills while looking through the Red Dot Sight)
Thermal Scope (20 Kills while looking through an ACOG Scope)
Extended Mags (40 bullet penetration kills with FMJs)

Light Machine Guns (All Full Auto)

L86 Saw - Unlocked at Level 4
RPD - Level 4
MG4 - Level 6
AUG HBAR - Level 32
M240 - Level 52

Attachments for the LMGs:
Grip (10 Kills)
Red Dot Sight (25 Kills)
Silencer (75 Kills)
ACOG Scope (150 Kills)
FMJ (300 Kills)
Holographic Sight (60 Kills while looking through the Red Dot Sight)
Thermal Scope (20 Kills while looking through an ACOG Scope)
Extended Mags (40 bullet penetration kills with FMJs)

Sniper Rifles

Intervention - Bolt Action, unlocked at Level 4
Barrett .50 Cal - Semi-Auto, Level 4.
WA2000 - Semi-Auto, Level 36
M21 EBR - Semi-Auto, Level 56

Attachments for the Sniper Rifles:
Silencer (10 Kills)
ACOG Scope (25 Kills)
FMJ (75 Kills)
Heartbeat Sensor (15 kills with silencer)
Thermal Scope (20 kills while looking through an ACOG)
Extended Mags (40 bullet penetration kills with FMJs)