The Umarex Beretta PX4 Storm 4.5mm CO₂ Air Pistol (Model 5.8078) is a licensed replica of the modern Beretta PX4 Storm handgun. Designed to replicate the look and handling of the real firearm, this air pistol combines realistic operation with reliable CO₂ performance.

Powered by a 12-gram CO₂ cartridge, the PX4 Storm fires 4.5mm (.177) steel BBs or pellets and features a dual-ended rotary magazine. Each end holds 8 rounds, allowing shooters to simply flip the magazine to continue shooting once the first cylinder is empty, giving a total capacity of 16 shots.

The pistol features a blowback slide action, creating realistic recoil and enhancing the shooting experience. A rifled barrel improves pellet accuracy, while the single- and double-action trigger system offers flexible control during shooting sessions.

With a velocity of up to 115 m/s (about 377–380 fps) and energy below 3.0 Joules, the PX4 Storm delivers consistent performance ideal for target shooting and backyard plinking.

The pistol also includes a Picatinny accessory rail under the barrel for mounting tactical lights or lasers. Combined with its ergonomic grip and durable construction, the Umarex Beretta PX4 Storm offers a realistic and enjoyable airgun shooting experience.

Key Features

• Licensed Beretta PX4 Storm replica design
• 4.5mm (.177) calibre – fires steel BBs or pellets
• Powered by 12g CO₂ cartridge
• Blowback slide action for realistic shooting feel
• Dual-ended rotary magazine (2 × 8 rounds)
• 16-round total capacity
• Rifled barrel for improved pellet accuracy
• Single / double-action trigger system
• Picatinny accessory rail for lights or lasers
• Ideal for target shooting and recreational use

Specifications

Brand: Umarex
Model: Beretta PX4 Storm
Model Number: 5.8078
Calibre: 4.5mm (.177)
Ammunition: Steel BBs or lead pellets
Power Source: 1 × 12g CO₂ cartridge
Magazine Capacity: 16 rounds (2 × 8 rotary magazine)
Velocity: up to 115 m/s (≈377–380 fps)
Energy: < 3.0 Joules
Trigger: Single / Double Action
Action: Semi-automatic blowback
Safety: Manual safety
Barrel Type: Rifled
Length: approx. 190–192 mm
Weight: approx. 725–755 g
Rail: Picatinny / accessory rail