Walther PDP F-Series 4" 9mm vs Walther PDP Full Size 9mm

These are the same pistol in two grip and slide configurations, and several specs are identical: both weigh 24.0 oz, both are 1.34" wide, both use the Performance Duty Trigger at 5.6 lb, both are optic-ready, and both carry a $699 MSRP. What changes is size and capacity. The Walther PDP F-Series 4" 9mm holds 15 rounds in a frame 5.4" tall and 7.25" long with a 4.0" barrel and a 6.4" sight radius. The Walther PDP Full Size 9mm holds 18, stands 5.4" tall, runs 8.0" long on a 4.5" barrel, and stretches the sight radius to 6.9". The F-Series grip is a reduced-circumference profile; the Full Size uses an interchangeable backstrap.

Pick the Walther PDP F-Series 4" if:

• Your hands are better served by the reduced-circumference grip than by a backstrap swap
• You want the shorter package for carry: 7.25" long, 0.75" less than the Full Size
• You do not need three more rounds, and price is a wash at $699

Pick the Walther PDP Full Size if:

• You want 18 rounds instead of 15 at the same weight and the same price
• You want the 0.5" longer sight radius (6.9" vs 6.4") and the 4.5" barrel
• You want the adjustable 3-dot rear sight rather than the F-Series standard rear

With weight, width, trigger and MSRP identical, this is purely a grip-and-size decision: the F-Series for the smaller circumference and shorter frame, the Full Size for three more rounds and a longer sight radius.