Walther PPK/S CO2 4.5mm BB Blowback Air Pistol by UMAREX
The Walther PPK/S CO2 is a compact, metal blowback pistol based on one of the most iconic sidearms ever made. It focuses on realism in both size and operation, while staying small enough to remain easy to handle and store.
This updated version refines the CO2 loading system and keeps the overall profile clean, while still delivering a noticeable blowback effect.
Key Features
- Full metal construction with heavy slide
- Blowback action for realistic cycling
- Compact, concealment-style frame size
- 15-round BB magazine
- Integrated hex key for CO2 installation (stored in grip)
- Single action trigger
- Classic Walther styling
Performance / Use Case
This is very much a compact plinking and replica-focused pistol. The blowback gives it a satisfying feel for its size, but like most CO2 BB pistols, efficiency is modest and best suited for short shooting sessions rather than extended range use.
Accuracy is what you’d expect from a smoothbore BB platform, perfectly fine for close-range targets but not something you’d rely on for tight grouping work.
Its strength is really in handling and realism rather than raw performance.
Build & Design
At 560g, it’s one of the lighter full metal blowback pistols, but it still feels solid thanks to its compact frame and metal slide. The reduced size makes it easy to control, especially for users who prefer smaller pistols.
The redesigned CO2 piercing system is neatly hidden, which improves the external appearance, and the included hex key being stored in the grip is a practical touch that avoids losing it.
Overall, it keeps the classic PPK proportions while modernising the internals just enough to improve usability.
Specifications
- Power Source: 1x 12g CO2
- Calibre: 4.5mm BB
- Magazine Capacity: 15 rounds
- Shot Capacity: approx. 60 shots
- Trigger: Single Action
- Safety: Lever
- Length: 155 mm
- Weight: 560 g
A compact, well-finished replica that prioritises realism and handling over performance. It’s not trying to be a high-power or precision platform, and that’s fine.
If you want a classic-style blowback pistol that’s easy to carry, fun to shoot, and doesn’t overcomplicate itself, this does the job without trying too hard to impress you.










