Lightweight

From the Call of Duty Wiki

Lightweight is a Tier 2 perk appearing on Call of Duty: Modern Warfare 2 that allows players to move faster. The released version of this perk granted a 10% movement speed boost, but player analysis of the data files following the PC 1.06 patch indicates that the boost was silently reduced to 7% without comment from Infinity Ward. The Pro version allows players to aim more quickly after sprinting (since there's a delay after sprinting before a player is allowed to take aim).

This perk is unlocked at the start of the game.

[edit] Tips

• It is easier to complete this perk's challenges with Marathon as both require sprinting for a certain distance.
• Combining the perks Marathon, Lightweight, Commando , and then running with your knife can result in an excellent close quarters class as well as assassination, a class with such perks is often called a "Knife Monkey" or "Ninja".
• Fantastic for flag runners in capture the flag along with marathon.
• If you have the pro version, using this with marathon and shotgun will allow you to run close to an enemy and quickly shoot him as you will be able to shoot very short time after sprinting.

[edit] Trivia

• This perk was seen in the teaser trailer in early 2009.
• This perk is useful for knife and shotgun classes and can be handy for players using the bulky Riot shield.

Perks of Call of Duty: Modern Warfare 2
Tier 1 Perks	Marathon · Sleight of Hand · Scavenger · Bling · One Man Army
Tier 2 Perks	Stopping Power · Lightweight · Hardline · Cold-Blooded · Danger Close
Tier 3 Perks	Commando · Ninja · SitRep · Steady Aim · Scrambler · Last Stand
Kill Streak Perks	3: UAV Recon · 4: Care Package · 4: Counter-UAV · 5: Sentry Gun · 5: Predator Missile · 6: Precision Airstrike · 7: Harrier Strike · 7: Attack Helicopter · 8: Emergency Airdrop · 9: Pave Low · 9: Stealth Bomber · 11: AC-130 · 11: Chopper Gunner · 15: EMP · 25: Tactical Nuke
Death Streak Perks	Copycat · Painkiller · Martyrdom · Final Stand