The effectiveness of the pressurized water system helps with not only conventional uses, but if you need to flush out your eyes, clean wounds or sharing water since you can just pinch the valve to get water. If you add the Geigerrig water filter, you can create the ultimate hydration pack and never worry about carrying extra equipment.
While this can be a liability at short range, this tradeoff allowed the engineers at TW Ordnance to deliver a weapon with a good balance of long-range accuracy, damage, and fire rate. Hold this window over the target continuously until a lock is achieved, then fire.
The charge rifle fires an energy beam that inflicts massive damage.