"The BXT-1A does more damage the longer you are in scope. This variant has a slower charge time, but can fire more shots before reloading." In Game Description.
The BXT-1A is variant of the BXT1 Rifle. Like the standard BXT1 it is a sniping weapon capable of dealing 500 damage at extreme range. This variant charges more slowly but can fire an extra round before reloading. To fire, the weapon must be in scoped-mode or it will only deal 10 damage.