Exclusive Weapon Powers

Each weapon has a special "exclusive power" when all of its stats are custom tuned to the maximum: 
Handgun - Increases the chance of a headshot being fatal by a factor of five (5% or 20%, take your pick). 
Punisher - Each bullet can penetrate up to five bodies. 
Red 9 - Increases firepower to 5.0 
Blacktail - Increases firepower to 3.4 
Matilda - Increases magazine capacity to 100. 
Shotgun - Increases the effective damage range of the gun. 
Riotgun - Increases firepower to 10.0 
Striker - Increases magazine capacity to 100. 
Rifle - Increases firepower to 18.0 
Semiauto Rifle - Decreases firing speed to 0.40 seconds. 
Broken Butterfly - Increases damage to 50.0 
Killer7 - No exclusive power! 
TMP - Increases firepower to 1.8 
Minethrower - Adds homing ability to mines and increases their blast radii.