Walther PDP F-Series, It’s Walther’s Duty to Build the Best Performing Firearm It’s Your Duty to Be Ready. Defining a New Revolutionary Achievement for Female Shooters with Walther’s Legacy of Unparalleled Performance. Accounting for precise structural differences, Walther has completely reengineered the ergonomics of the grip to be designed for the exact biomechanics of women’s hands. Featuring a new patented operating system resulting in a 20% reduction in slide rack force paired with all the performance duty features of the PDP, the F-Series pistol is the elite choice for all women.