The first secondary players get their hands on in Modern Warfare 2 will be the P890 pistol. While some arguments have been made on which handgun is the best, the P890 is one of the best close ranged options for tight quarters. Unlike the .50 GS, there is much less penalty for missing shots, and with the right attachments, you can take out multiple enemies with one magazine. This is how to unlock every attachment for the P890 in MW2.
How to unlock all P890 Attachments in Modern Warfare 2
The P890 has a reliable fire rate that can be increased drastically, making it dangerous in close-quarters situations like Search and Destroy or Prisoner Rescue. It works best with a silencer in these situations and relies on other attachments to bring out its potential. On a loadout with something like the TAQ-56 or M4, the weapon can cover ground that mid to long-ranged weapons can't. Unlocking everything on the weapon requires leveling other weapons for their attachments and raising the P890's own level for its own attachments. This is everything it can use and how to unlock it.