Collosus Suppressor

"Extended suppressor adds considerable weight to the barrel, but greatly increases the muzzle velocity and reduces recoil to help with long range precision."

- in-game description.

Collosus Suppressor is an attachment available for the Oden in Call of Duty: Modern Warfare. It increases sound suppression, damage range, and recoil control, while decreasing ADS speed and aim walking steadiness.