When firing your gun in Modern Warfare 2, aiming down the sights is crucial. Even if you don’t have a fancy red dot or something similar, just looking down the iron sights will improve your aim by a large margin. When firing at a long-range target, it’s absolutely necessary.
It’s also very important to learn how to use the “snap” feature when targeting foes. It doesn’t work in multiplayer for obvious reasons, but it’s very important when playing single player. As explained in the brief in-game tutorial, when you aim down the sights, your view snaps to the nearest target. Take the target out, quickly zoom out and back in and it should snap to the next closest enemy. Use this feature so often that it becomes second nature.
The only enemies that this technique won’t work on are those well hidden behind cover. For these guys, you’ll have to aim the old fashioned way. Oh, poor you. Usually, even when an enemy is behind cover, something is exposed. It’s often a limb, but sometimes you’ll get lucky and you’ll see the top of their head, and you’ll be able to take them out with a headshot. If you can’t see them at all, just aim next to their cover so that when they pop out for a shot, you can shoot first.
You might notice that your crosshair has a slight “drag” effect when you’re aiming at enemies. Not only does this help your accuracy, but you can also use it to sort of feel out enemies that are hiding in thick brush or otherwise hard to see. Move your crosshair around an area where you think an enemy is, and if it starts to drag, just open fire.
Good accuracy is the key to staying alive in Modern Warfare 2, so keep these tips in mind while playing.
Article from Gamersyndrome.com