As most games talk about a "Black Hawk" helicopter, we refer to this one mainly.

Most common variants:

• UH-60 Black Hawk
• SH-60 Seahawk
• HH-60 Pave Hawk
• HH-60 Jayhawk

Weapons:

• The UH-60 Blackhawk can be equipped with a lot different weapons, in games usually it has miniguns on both sides. 

Reality vs Games:

• Battlefield Bad Company 2 names it AH-60... but the AH-60 made for export only, it has light rockets, and it was planned for Columbia, Australia and Korea.... so definately not what we see in the game :).
• In real life the UH-60 Blackhawk is often equippped with M60 light machine guns (or similar infantry machine guns) while in games it has most often minguns attached