Gamestop is known for the exclusive pre-order bonus, as well as confirm aspects of the game not yet revealed by the developers themselves. Well it looks as if Gamestop has confirmed online co-op for the upcoming SOCOM 4 U.S NAVY SEALs, through a pre-order bonus of in-game shotgun.
Super M90 Shotgun - An extremely high quality, versatile and powerful weapon, the Super M90 is preferred tactical shotgun among the U.S. NAVY SEALs since 1999. This 12-gauge shotgun is equipped with slug ammunition for serious stopping power. It inflicts heavy damage in a focused area and features a greater effective range than standard shotguns. This weapon can be used exclusively for multiplayer co-op missions