Stalker

Stalker is a Speed Perk featured in Modern Warfare: Resurgence.

"Reduce movement penalty while in ADS for increased mobility during combat. Get the most out of Stalker by strafing during fire with accurateweapons that won’t stray off target during open, mobile fire."

- In-game Description

Overview
Stalker gives the user 100% walking speed while aiming down the sights. Light Machine Guns, Sniper Rifles, and Assault Rifles receive the most benefit from this perk. Submachine guns and Handguns receive less benefit as their default movement speed while ADS is higher. Stalker is an excellent perk for an aggressive style of play, allowing the player to remain mobile at all times, and making it possible for assault rifles and even light machine guns to keep up with submachine guns and shotguns even on maps focused on close quarters fighting such as Run Down or Octane.