Souvenir 
Open in Steam 
Description
More accurate but less damaging than its AK-47 counterpart, the M4A4 is the full-auto assault rifle of choice for CTs. It has been custom painted with the image of a snarling wolf.
FAQ
Where to sell Souvenir M4A4 | Howl (Factory New)?
You can sell on the Steam Community Market (~13% fee, money stays in Steam) or on marketplaces with cash withdrawal: CSBoard (0%), CSFloat (2%), DMarket (2%) — lower fees and real payouts.