(Photo curtesy of

Related Posts:

Type: Pellet air pistol.

Manufacturer: Umarex.

Model:PX4 Storm.

Materials: Metal slide, composite frame.

Weight: 1.6 pounds.

Barrel: 4.5 inches, metal-rifled.

Propulsion: CO2 x 1.

Action: Semi auto, blowback, double and single action.

Ammunition Type: .177 cal. Pellets or Steel BBs 4.5mm.

Ammunition Capacity: 16 rounds.

FPS: 380.

Trigger Pull: The trigger pull is long and light when in single action mode, there is a slight heavy spot at the begging when the rotary magazine is turned to advance to the next pellet and then another break point near the end to actuate the hammer.

Accuracy: Good, not amazing but pretty good.

Build Quality: Excellent, with a very nice slide finish that is more of a dyed metal rather than painted like most airguns. The non-metal components seem to be very durable and the fit and finish to this gun is outstanding.

Realism: This is a very close replica to the real Beretta PX4 Storm with licensed trademarks and most everything in all the right places. The only real acceptation is the safety lever which has been repurposed from the Umarex CP99 Compact BB Blowback Airgun.

Purchased this gun in: The Replica Airguns Store.


  • Good reproduction of the original Beretta PX4 Storm.
  • Would make an excellent training gun as it has a similar size, weight, and feel to the actual Beretta PX4 Storm handgun.
  • Blowback action is very firm adding to the realism of shooting this weapon.
  • Good FPS and CO2 efficiency for a blowback Pellet air gun.
  • Nice easy to use sights with white spot markings for quick targeting.
  • Picatinny rail for accessories like a laser sight and/or tactical light.


  • Non functioning slide release on frame and safety lever on slide.
  • Slide does not stay back after 8th shot so you need to count them off or you end up wasting a few shots before you realize no pellets are coming out.
  • No way to keep the slide back, no working slide release.
  • Safety lever seems out of place and takes away from the realism of this replica.


The Umarex Beretta PX4 Storm is a very unique pellet blowback air pistol and there are very few airguns that sport all the same features. Not only is it a very close replica of the original Beretta PX4 Storm but it's also a blowback pellet shooter with decent FPS velocity. The Umarex PX4 Storm has decent accuracy and you can expect about 60 good shots out of a CO2 cartridge. At well under $100, this replica airgun is a great value and a nice addition to any airgun enthusiasts collection.

4.5mm / .177 cal, Blowback, CO2, Pellet, Pistol, Review, Semi Auto, YouTube Video Beretta, PX4 Storm, Umarex