Old-style Hyperion pistols have higher damage output at the cost of significantly lower accuracy and fire rate than their modern analogs. They also have a limited version of Hyperion's "reverse recoil" when aimed down the sights only.
The Factualizer utilizes the Hyperion pistol barrel which gives it increased accuracy, reduced recoil as well as a special bonus of +15% to critical hit damage. The downsides of this gun compared with other Hyperion pistols are a smaller magazine size and reduced base damage.
The Factualizer only comes in green or higher rarity.
The Factualizer is obtained randomly from any suitable loot source.
The bonus to critical damage displayed on the Item Card as "+8% Critical Hit Damage". In fact, this value is only modifier of pistol with Hyperion barrel on a critical multiplier.
Factualizers have hexagonal stabilizers attached, which gradually spread open as they fire. This feature is common for E-tech weapons introduced in Borderlands 2. However, unlike the E-tech pistols, stabilizers' interiors do not glow and the Factualizers are capable of scoring critical hits.