You get it by leveling up.
Level 13 i think it is :).
Throwing Knife: Unlocked at Level 7. Reusable throwing blade. Throw it and pick it back up see related link for List of weapons and attachments in Call of Duty: Modern Warfare 2
A related link has also been added for COD Wikia on the Throwing Knife
You can buy each 5 of them for 14.99$ on steam
The emergency airdrop killstreak is unlocked at 8 kills.
Cold blooded perk is in tier 2 and is unlocked at level 25
In Call of Duty 4: Modern Warfare, the M14 rifle is unlocked at Level 46 in multiplayer.
its called special ops
the trowing knife replaces the equipment slot
There is no throwing knife in Call of Duty 4: Modern Warfare.
All titles and emblems you have unlocked and anything you have unlocked with prestige tokens.
No, you must have the attachment already unlocked
All titles and emblems you have unlocked and anything you have unlocked with prestige tokens.
Special Warfare insignia was created in 1970.
get a game winning kill with a throwing knife
Throwing knifes and probably swiss army knifes. Modern Warfare 3 would just merely call it a Tactical Knife or Throwing Knife.
Go to Equipment in the create a class menu, you should unlock the Throwing Knife at lvl 7, just put Throwing Knife on as your Equipment, then, when in game, just push the R2 button to throw it. (R2 is the button to throw it on Ps3, i'm not sure what button it is for PC or Xbox)
Naval Special Warfare Group was created in 1956.
The TMP is unlocked on level 58.
When you unlock the throwing knife at rank 8 or 10 (cant remember) then you equip it to yourself instead of a grenade and throw it just like one. no matter if you hit them or miss, you can still pick it back up and reuse it.