FMJ: Ammo that will go through several walls and enemies before stopping, extra damage. Somewhat rare and expensive
Hollow Point: Increased damage ammo. Scarce but fair price
Incendiary: Ammo thats sets enemies on fire. Rare but expensive
Explosive: Ammo that knocks enemies directly over and will do damage if the round hits near them. Scarce but expensive
Buckshot:(Shotguns only)Increased damage ammo. Common but expensive( dont hit your teammates kiddys

Metal Slug:(Shotguns only)One huge round that does crazy damage when it hits, inaccurate and will go through enemies
Electric: Ammo thats temporarily stun enemies. Rare but cheap. Extra damage to robots
Anything you guys can add?