Killzone 2 Handgun
The Killzone 2 handgun is a weapon of last resort. As it has infinite ammo you'll find yourself using it in the most dire of situation. That said the gun can pull a few suprises, dropping enemies with a single shot to the head.
Strategy for using the handgun
The best strategy is to use it close up, turning in a tight cricle will allow you to escape the arc of fire from an enemy using a machine gun, a few shots and if you're lucky you'll get a headshot and can then steal their weapon.