The Walther PDP Compact 4" (Umarex code 2.6559) is a gas-blowback (GBB) airsoft pistol engineered for realism and reliable field performance. It pairs a metal slide with a polymer frame, features a 20 mm Picatinny rail for accessories and adjustable hop-up for tuning accuracy. Blowback operation delivers a realistic recoil feel, while the compact 4" configuration (approx. 180 mm length) and 20-BB magazine make it a practical choice for field play.

Optic-ready options and solid construction provide flexibility for customization and robust use. In short: a compact, realistic GBB built for players who want reliable blowback performance and accessory compatibility.

4. Technical features & specifications

Caliber: 6 mm BB.

System: Gas Blowback (GBB).

Muzzle energy: approx. 1.0 J (field standard).

Construction: metal slide, polymer frame.

Magazine capacity: 20 BB.

Rail: 20 mm Picatinny under barrel.

Hop-up: adjustable.

Length: approx. 180 mm.

Weight: ~625–634 g (varies by source).

Typical package: pistol, magazine, manual, hop tool.

5. Package contents

1 × Walther PDP Compact 4" replica

1 × 20-round magazine

Manual and adjustment tool

6. Warnings and maintenance
Do not tamper with or modify the replica in an unauthorized manner. Store in a dry place, away from heat sources and direct sunlight to protect seals and gas system components. Keep out of reach of children and unauthorized users.

Use only recommended gas canisters and compatible propellants; do not use damaged canisters or improper gases. When loading/unloading magazines, ensure the pistol is on safe and pointed in a safe direction. Check O-rings, seals and safety mechanisms before use. Eye protection is mandatory in any airsoft environment.

Perform routine maintenance: clean firing group and magazine internals, lubricate with airsoft-approved products and replace worn O-rings with original spares. Major repairs or work on metal slide components should be performed by qualified service centers. Dispose of gas containers and hazardous waste according to local regulations.

These warnings comply with GPSR requirements and applicable Italian product safety legislation.