Please find below the complete and official List of Modern Warfare 3 weapons, attachments, equipment and perks.
Official MW3 weapons:
Pistols:
USP .45
P99
MP 412
.44 Magnum
Five Seven
Machine Pistols:
FMG-9
MP9
Skorpion
G18
Shotguns :
USAS 12
KSG 12
SPAS 12
STRIKER
Model 1887
SMG's :
MP5
UMP
PP90M1
P90
PM-9
MP7
Assault Rifles :
M4A1
M16A4
SCAR-L
CM901
TYPE 95
G36C
ACR
MK14
AK-47
FAD
LMG's :
L86 LSW
MG36
PKP PECHENEG
MK46
M60E4
Sniper Rifles :
BARRETT .50 CAL
L118A
DRAGUNOV
AS50
RSASS
MSR
Launchers :
SMAW
JAVELIN
STINGER
XM25
M320 GLM
RPG
Confirmed attachments :
- Holographic Sight
- Red Dot Sight
- Hybrid Scope (Assault Weapons)
- Suppressor
- Grip
- Bi-Pod (Snipers)
- ACOG Scope
- Laser Sight (Handguns)
- Grenade Launcher
- Heartbeat Sensor
- Rapid Fire
- Extended Mags
- Thermal
- Shotgun
- Variable Zoom (Snipers)
- Akimbo/Dual Wield
- Customized Reticles
- HAMR Scope (SMGs)
Confirmed Equipment
- C4
- Claymore
- Auto Turrets
- Auto Grenade Launchers
- Knife
- 9-Bang
- Frag Grenade
- IMS : Intelligent Munitions System (The mine type thing in the trailer.)
- Riot Shield (Wasn't sure where to put this)
- EMP Grenade
- Bouncing Betty
- Portable Radar
- Throwing Knife
- Semtex
- Stun Grenade
- Scrambler
- Smoke Grenade
- Trophy System
- Tactical Insertion
Perks :
- Recon: Explosive damage paints the target on the mini map
- Blind Eye: Undetectable by air support/sentries
- Assassin: Undetectable by UAV, portable radar, thermal, heartbeat
- Quickdraw: Faster aim down sight
- Stalker: Move faster while aiming
- Marksman: Identify targets at longer range
