UMAREX 5.8346 AIRGUN H&K USP 4.5

Experience realistic handling and performance with this Heckler & Koch CO₂ Blowback BB Pistol, an authentic replica of a renowned semiautomatic platform. Designed for collectors and recreational shooters, it combines rugged construction with lifelike operation.

Featuring a heavy full-metal slide and integrated blowback action, this air pistol delivers a convincing shooting experience with every shot. The blowback system cycles the slide during firing, enhancing realism while maintaining reliable performance.

Chambered in 4.5mm (.177) BB, the pistol is powered by a 12g CO₂ cartridge, offering consistent velocity and smooth operation. The 18-round magazine and single/double action trigger provide versatility and ease of use for both casual plinking and target practice.

For added safety and realism, the pistol is equipped with a decocker mechanism, allowing safe handling and controlled operation. The solid build and balanced weight further enhance the authentic feel in hand.

Supplied with 250 BBs included, this package is ready for action straight out of the box—perfect for training, plinking, or adding to your airgun collection.

Key Features

Authentic Heckler & Koch replica design

Full metal slide for durability and realistic weight

Blowback action for lifelike shooting experience

4.5mm (.177) BB calibre for plinking and target shooting

Powered by 12g CO₂ cartridge for consistent performance

18-round magazine capacity

Single and double action trigger for versatile operation

Integrated decocker safety for safe handling

Includes 250 BBs – ready to use out of the box

Ideal for collectors, training, and recreational shooting

Technical Specifications

Energy Level (E₀): < 3.0 Joules Velocity (V₀): 110 m/s (361 fps) Calibre: 4.5 mm (.177) BB Power Source: 1 x 12g CO₂ Magazine Capacity: 18 rounds Shot Capacity: Approx. 72 shots per CO₂ cartridge Trigger: Single / Double Action Safety: Decocker Length: 192 mm Weight: 976 g Holster Type: A