.50 GS Unlock Level
| Weapon | Rank Unlocked | Weapon Type |
| .50 GS | Unlocked at Rank 13 | Handgun |
Every Non-Platform Weapon Unlock in Modern Warfare 3
There are 18 Non-Platform Weapons in Modern Warfare 3 that players can unlock simply by ranking up. These weapons are usually either special weapons or sidearms.
| Weapon | Rank Unlocked | Weapon Type |
| Vel 46 | Unlocked Automatically | SMG |
| Sakin MG38 | Unlocked Automatically | LMG |
| MCPR-300 | Unlocked Automatically | Sniper |
| P890 | Unlocked Automatically | Handgun |
| PILA | Unlocked Automatically | Launcher |
| PDSW 528 | Unlocked at Rank 5 | SMG |
| Expedite 12 | Unlocked at Rank 12 | Shotgun |
| .50 GS | Unlocked at Rank 13 | Handgun |
| STRELA-P | Unlocked at Rank 14 | Launcher |
| JOKR | Unlocked at Rank 24 | Launcher |
| RAAL MG | Unlocked at Rank 25 | LMG |
| Lockwood Mk2 | Unlocked at Rank 28 | Marksman Rifle |
| RPG-7 | Unlocked at Rank 32 | Launcher |
| Lockwood 300 | Unlocked at Rank 36 | Shotgun |
| Riot Shield | Unlocked at Rank 37 | Melee |
| Fennec 45 | Unlocked at Rank 38 | SMG |
| Basilisk | Unlocked at Rank 39 | Launcher |
| Signal 50 | Unlocked at Rank 44 | Sniper |
| M13B | Unlocked in DMZ from Chemist. | Assault Rifle |
| BAS-P | Obtain HVT from Sector A6 in Season 1 Battle Pass | Submachine Gun |
| Victus XMR | Season 1 Battle Pass Sector A7 Free Reward | Sniper Rifle |
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MW3 Weapon Unlock Levels