Yes, ammo is a Scrabble word!
...and is worth 8 points in Scrabble, and 10 points in Words with Friends
ammo
Noun
1. Projectiles to be fired from a gun
What Scrabble words can I make with the letters in ammo?
3 Letter Words
2 Letter Words
Noun
1. Projectiles to be fired from a gun
3 Letter Words
2 Letter Words