Call of Duty 4 Modern Warfare Remastered – Weapon Master Trophy / Achievement – Get a kill with each type of handheld gun, explosive and launcher in the single player campaign. 
In order to unlock the Weapon Master trophy you must locate all weapons in the game and kill an enemy with each one of them. Some can be found in multiple locations, some are in specific locations only. Many of them are starting weapons in certain levels and many are dropped by enemies (or fallen allies). Below you can find a full list of all their locations:
Pistols:
- USP45 SD: Starting weapon in mission “Crew Expendable”.
- M9: Starting weapon in mission “Charlie Don’t Surf”.
- USP45: Check the table in first room with enemies in “Charlie Don’t Surf”.
- M1911: Starting weapon in mission “Hunted”.
- Desert Eagle: See trophy Desert Storm. An enemy in mission “Crew expendable” has it.
Submachine Guns:
- Mini-Uzi : Many enemies drop it throughout the story.
- MP5: Many enemies drop it throughout the story.
- MP5 SD: Starting weapon in mission “Crew Expendable”.
- AK-74u: Enemies in mission “Charlie Don’t Surf” can drop it.
- P90 SD: In mission “All Ghillied Up” after you crouch past the tanks and infantry you must kill some enemies. Then you come to an area with lots of containers. One enemy here has the weapon.
- P90: Enemies in mission “Mile High Club” can drop it.
- Scorpion: Enemies in mission “Blackout” can drop it.
Assault Rifles:
- AK-47: Dropped by lots of enemies throughout the story.
- M4A1 SOPMOD: Starting weapon in “Blackout”.
- G3: In mission “Blackout” some enemies can drop it.
- M4A1: Starting weapon in mission “Charlie Don’t Surf”.
- M16: In mission “War Pig” it is rarely dropped by teammates.
- G36: In mission “The Hunted” some enemies can drop it.
Shotguns:
- W1200: Found multiple times throughout the story. Can also be dropped by enemies. In mission “Charlie Don’t Surf” it can be picked up from the table in the first room.
- M1014: In mission “Hunted” the first enemy will drop it. Also found in many places throughout the story
Light Machine Guns:
- M249 SAW: Starting weapon in mission “Heat”.
- RPD: In mission “Safehouse” check the table near intel #18.
- M60 E4: In mission “Game Over” one of the enemies on the first bridge has it..
Sniper Rifles:
- Dragunov: Found very often throughout the story. Enemies also drop it. In mission “Charlie Don’t Surf” it’s on the table in the first room.
- M21 Silenced: Starting weapon in mission “Blackout”.
- Barrett Cal.50: Starting Weapon in ‘One Shot, One Kill”.
- M21: You get it in mission “One Shot, One Kill” after the initial sniper sequence.
- R700: Starting weapon in mission “The Sins of the Father”.
Explosives:
- Flashbang: Part of starting equipment (most missions).
- Grenade: Part of your starting equipment (most missions).
- C4: Starting equipment in several missions.
- M203 Grenade Launcher: Starting weapon in mission “War Pig”.
- Claymore: Starting equipment in several missions. You also have to put up claymores as part of the story in “One Shot, One Kill”.
- GP-25 Grenade Launcher: Dropped by several enemies throughout the story. E.g. in first area of mission “All In”.
Launchers:
- RPG7: Many enemies throughout the game have these rocket launchers. Also see trophy ‘Flyswatter’ for fixed location.
- Javelin: In mission “The Bog” you pick it up as part of the story.
- Stinger: In mission “The Hunted” you pick it up as part of the story.
Special thanks to PSN User servus99 for finding and confirming many of these!
Cameron says
I have gotten several kills with each of these weapons, including flash bang kills, direct impact noob toob kills with ak, M16, and M1 for good measure. I have gotten kills with every weapon and every unique way suggested by everyone who has gotten the trophy, yet I still haven’t received the trophy. I don’t know what I’m missing!!!
Matthews says
I would double check the M16. you only get it in “war pig” on right side of the scrape pile after an ally dies (I took out enough enemies to let them move up but left a bunch alive)
Cameron says
No, I have definitely gotten a kill with each weapon. However, I did use mission select and played on recruit to make finding them easier. Would that make it not work? (I completely played through the missions, not just quitting)
Bill says
That shouldn’t matter. Saying that, I haven’t gotten this trophy yet either.
Atreyu says
If you have ANY cheat codes from the enemy intel items turned on you cannot get any trophies. If you start the mission with any turned on, turn them off and restart the mission
JumpyPrattblock says
The Last Weapon is the M60E4 in the last mission GAME OVER and only one person has it right at the end of the game, the guy in the big truck on the passenger side will drop it when he exit it’s a light machine gun , pick it up and shoot everybody or at least one person and the achievement will appear………
HEADAPPLE says
Does it matter of you use mission select or does it have to be in a single campaign?
LiamHP says
Lol the fact I have gotten a kill with every weapon and triple checked everything (suppressed and non-suppressed) it still hasn’t given me the achievement and it is my final one
Skuffy says
if your think your missing a gun try the Barrett i and the M60 that was what i had to do i just finished it.
Barrett-One Shot One Kill
M60-Game Over, on the bridge enemy passenger of the first truck has it
Dave says
I was told you’ve got to get a kill with each of the ‘Grenadier’ weapons, which I believe are the AK47 ‘Grenadier’ M4A1 Grenadier & M16A4 Grenadier. I believe you need to get a kill with each of these weapons using bullets & G-Launchers individually 🙂
One-Eyed Irish says
Doesn’t matter what modifications a weapon has, using any form of that weapon counts. (For example, you don’t have to get a kill with an ak47 AND an ak47 with noobtoob)
unknown user says
Weaponns are better than original and I prefer m21 from all ghillied up
Dylan Nester says
I’m the same im 96% done with it so it’s one more gun any tips I swore I done this ten fold I did the m16 I did the gun in game over thinking it was them two and all my achievement did was go up in percentage there’s one I’m missing I can’t think what please help me
Rumon says
Is there a way to check what weapons have been used so far? From the game files? I’m playing this game on Windows 10.