Here is a complete list of Perks and Pro Perks for Call of Duty: Modern Warfare 3. Not many new abilities but some reassignment of them so now the Pro perks have a new partnership, for example ‘No fall damage’ is now on Dead silence instead of Lightweight or Commando, as these two don’t exist in the new MW3 or that now Faster aiming is no longer under ‘Sleight of Hand’ but is in a new Perk called ‘Quickdraw’.
Recon – Explosive damage paints the target on the mini-map.
Recon Pro - Bullet damage paints the target on the mini-map.
Sleight of Hand – Faster reloading.
Sleight of Hand Pro – Swap weapons faster.
Blind Eye – Undetectable by air support and sentries.
Blind Eye Pro – Launchers lock-on quicker. Extra bullet damage versus air support and sentries.
Extreme Conditioning – Sprint for Longer distances.
Extreme Conditioning Pro – Climb obstacles faster.
Scavenger – Refill your ammo from fallen enemies
Scavenger Pro – Spawn with increased ammunition.
Quickdraw – Faster aiming.
Quickdraw Pro – Recover from equipment and grenade usage quicker.
Blast Shield – Increased explosive resistance.
Blast Shield Pro – Resistance to flash and Stun.
Hardline – Killstreaks require 1 less kill.
Hardline Pro – Every two assists counts as a kill toward your killstreak. Deathstreaks require 1 less death.
Assassin – Undetectable by UAV, portable radar, thermal and heartbeat sensors.
Assassin Pro – Immune to CUAV and EMP. No red crosshair of name when targeted.
Overkill – Carry two primary weapons.
Overkill Pro – Second primary can be equipped with 2 attachments.
Marksman – Identify enemy targets at aa longer range.
Marksman Pro – Longer hold breath.
Stalker – Move fast while aiming.
Stalker Pro – Delay enemy Clamore explosions.
Sitrep – Detect enemy explosives and tactical insertions.
Sitrep Pro – Louder enemy footsteps.
Steady Aim – Increased hip fire accuracy.
Steady Aim Pro – Weapon is ready faster after sprinting.
Dead Silence – Move quietly. Reduce the effects of Recon.
Dead Silence Pro - No fall damage.