The Walther Arms PDP Threaded Bbl Kit 9mm 5.1" Polygon is a purpose-built upgrade for PDP 4.5" pistols, pairing a 5.1-inch threaded barrel with polygonal rifling for consistent, repeatable accuracy. The kit includes the precision 9mm Luger barrel with 1/2" x 28 threads, a dedicated recoil spring assembly, and a thread protector, giving PDP owners a clean path to suppression-ready performance while maintaining the familiar balance and ergonomics of the platform.

This accessory kit is ideal for shooters who want smoother recoil impulse and enhanced muzzle control during range sessions, training, or competition practice. The polygonal bore profile promotes efficient bullet engagement and helps keep the barrel running cleaner over extended use. Whether you are refining a personal protection setup or simply optimizing your PDP for more versatile shooting, this threaded barrel kit reflects Walther’s focus on practical innovation and refined craftsmanship.

Key Features:

• Manufacturer: Walther Arms
• Model: PDP Threaded Bbl Kit 9mm 5.1" Polygon
• Caliber: 9mm Luger (9x19 Parabellum)
• Barrel Length: 5.10"
• Threaded Barrel: Yes, 1/2" x 28 TPI
• Included Components: Threaded Barrel, Recoil Spring Assembly, Thread Protector
• Rifling Type: Polygonal
• Compatible With: Walther PDP 4.5" Models