For you to obtain the Gearhead trophy and achievement in Call of Duty: Modern Warfare 3 (MW3), you will need to collect all weapons and Field Upgrades from the supply boxes in the Reactor level, as shown on the map above and in the list below.
- Silenced Holger 556 (Assault Rifle)
- Incendiary MCW (Assault Rifle)
- Incendiary Sakin MG38 (LMG)
- KV Inhibitor (Sniper Rifle)
- Minigun
- Snapshot Pulse (Field Equipment)
- RGL-80 (Grenade Launcher)
- Silenced Cor-45 (Handgun)
- Silenced Expedite 12 (Shotgun)
- Sidewinder (Assault Rifle)
- Basilisk (Handgun)
- Hybrid STB 556 (Assault Rifle)
- PILA (Launcher)
- Signal 50 (Sniper Rifle)
- Explosive Crossbow
- Incendiary MTZ Interceptor (Marksman Rifle)
- Heartbeat Sensor (Field Equipment)
- Incendiary FJX Imperium (Sniper Rifle)
- Munitions Box (Field Equipment)
- HCR 56 (LMG)
- Incendiary Haymaker (Shotgun)
- Anti-Armor Rounds (Field Equipment)
- Incendiary Bryson 800 (Shotgun)
- Silenced Lachmann Sub (SMG)
- VEL 46 (SMG)
- Armor Box (Field Equipment)
- Fennec 45 (SMG)
- Holger 26 (LMG)
- Cronen Squall (Battle Rifle)