The PDP Compact 4" is a performance-oriented, striker-fired pistol built around Walther’s ergonomic frame and a 4.0 in polygonal barrel. The design emphasizes consistent hand fit and sight radius suitable for carry or duty use while retaining a compact overall footprint.

This example retains the factory PDP trigger system and is fitted with a Practical Performance Gen-2 stainless captured guide rod. The guide rod ships with a 15 lb ISMI flat-wire recoil spring installed and includes a spare 13 lb ISMI spring for tuning slide reciprocation. The slide is optics-ready for direct-mount mini reflex sights, controls include a reversible magazine catch and ambidextrous slide stop. Original box, guide rod, springs, and optics cover plate not included.

Specifications

• Manufacturer: Walther

• Model: PDP Compact 4"

• Caliber: 9×19mm

• Barrel Length: 4.0 in

• Action: Striker-fired

• Frame: Polymer, black

• Slide: Steel slide, black, optics-ready

• Trigger: Factory PDP trigger system

• Optic Cut: PDP 2.0 Optics-cut

• Controls: Reversible magazine catch, ambidextrous slide stop

• Guide Rod: Practical Performance stainless captured guide rod, 15 lb ISMI spring installed, 13 lb ISMI spring included

• Magazines: Three 15-round magazines

• Weight (Unloaded): ~21.4 oz

• Overall Length: ~7.5 in