The Walther PDP Compact 4" is a modern CO₂-powered BB pistol designed for shooters who want authentic handling, reliable performance, and compatibility with real optic systems. Built around Walther’s Optics Ready (OR) slide, the PDP Compact accepts red dot sights that use Vortex, Leupold, C-More, and Trijicon mounting standards when paired with optional adapter plates. This makes it an excellent platform for training, tactical practice, or realistic recreational shooting.

The metal slide delivers a strong and crisp blowback effect, providing noticeable recoil and realistic cycling with every shot. Powered by a 12 g CO₂ capsule, the pistol reaches velocities of 120 m/s (394 fps) while staying under the <3.0 J energy limit. Its 18-round steel BB magazine ensures consistent shot delivery, and a total shot capacity of 72 rounds per cartridge offers extended shooting sessions without frequent CO₂ changes.

The PDP Compact features an ergonomic polymer frame with enhanced texturing for secure handling in dynamic conditions. The Picatinny rail located under the dust cover allows mounting of tactical accessories such as lights or lasers, adding versatility for training scenarios.

Safety components include an Automatic Trigger Safety, Sliding Manual Safety, and a trigger blade lock that prevents accidental firing. The pistol operates in both Single and Double Action, giving the user flexibility in trigger control and response.

Measuring 183 mm in length and weighing 665 g, the PDP Compact maintains a realistic balance that closely mirrors its real-steel counterpart. With its optic-ready slide, strong blowback, and modern duty-pistol ergonomics, the PDP Compact 4" is an excellent choice for shooters seeking a reliable and realistic CO₂ BB platform.