Talk:SAS: Zombie Assault 3/@comment-82.95.112.45-20150108202701/@comment-25739940-20150108231142

After you buy it via Rebirth, you choose one of your weapons to place it on, and it raises its damage, fire rate, and reload speed by 30%. Although it resets your Rank to 1 and takes away all non-premium purchases/skills. Based on the description that is; I haven't bought it, so I'm going by what the game says.