Beretta PX4 Storm BB/Pellet Pistol

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 exception is the safety lever that has been repurposed from the Umarex CP99 Compact BB Blowback Airgun.


  • 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.

Comments: 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 reasonable accuracy and you can expect about 60 good shots out of a CO2 cartridge.

Barrel Size:4.1 Inch
Caliber:4.5 mm (.177 cal)
FPS:350 to 400
Ammo Type:Pellet/Steel BB
Power Source:Co2
Trigger Action:Double/Single
Gun Blowback:Blowback
Rear Sight:Fixed
Front Sight:Blade

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Mar 27, 2016

Reliable, loud and fun

I own two air rifles and three air pistols and this number has become my favourite for a number of reasons.1. It's reliable. The mag did start to self-eject on shots, but if you make the notch on the mag sharper and bigger with a knife it stays put. Other than that, it just works. I've put hundreds of rounds through it.2. It's pretty accurate. Short barrel pistols like this are always a compromise, but it does deliver the kind of consistency you would expect from pellets. The stock sights are fine.3. It's hot. They claim 380 fps and compares well to my 500 fps air rifles. Surprising for such a small pistol.4. It's LOUD. Ok this may be a negative to some, but I just like the huge BANG it makes. on firing. It sucks CO2 like crazy and kicks hard and I don't mind that it goes through a powerlet for only 40 shots, because I'm usually done shooting by then anyway and I don't like leaving live powerlets in guns.You can even buy this model at crappy tire, but has it waaaay cheaper. As in about half the price.
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Oct 31, 2015
Certified buyer

Great for the price

I bought this gun back in August and arrived quickly. Accuracy is very good. Spare mags are essential, at least 2-3 more. I found pointed or rounded pellets works best with the mags, flatheads and hollow point a little less. A mini laser for rail can be a nice add-on. You get about 64 good shots (4 mags) before you see a considerable drop in FPS. I highly recommend the PX4 !
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Oct 30, 2015
Certified buyer

Great Gun but has issues

I bought this PX4 Storm October 23rd 2015 arrived on Wednesday the 28th. Fast shipping and ordered the gun with 2 extra mags. Extra mags are a must for this gun. The gun itself is well made and quite hefty! I was impressed with the weight of it. The slide is of high quality metal and the frame is Polymer, mags are plastic inside and out. The gun itself handles very nicely and upon placing the first Co2 cartridge the gun did not pierce the cartridge all the way. This created issues for the firing sequence. The first 3 pellets were of all different power levels, the first shot was full power but the second 2 were weak and did not have enough Co2 to throw the slide back. As I said this was due to the Co2 cartridge not being punctured completely. The 4th shot the pellet lodged in the barrel and I spent the better part of an hour fixing this! I remedied the problem my son and I used 5 more Co2 and half a tin of pellets just having fun in the basement. Once the problem was fixed it was more fun than I have had in a long time shooting. the blowback is very realistic but note that the blow back uses quite a bit of Co2! You will get between 4-6 full mags out of 1 Co2 cartridge. This is a great training pistol for those looking to get into real handgun shooting. Accuracy in the basement shooting 15 feet was just ok. I wasn't cutting the same hole lol , the blow back has a lot to do with this.This was also 2 handed free hand shooting too. If rested , the accuracy should increase! Great gun highly recommend! UPDATE JANUARY 2016: I figured out what the problem with this gun is. It is the Co2 Cartridge. For some reason the cartridge will push the valve up into the gun causing the slide to engage the valve. When this happens the slide will not go forward all the way. This was using Daisy brand Co2 cartridges. Crosman Co2 work fine and no problems with them. This gun is meant for using wadcutter type pellets, anything else just shoots all over the place. Wadcutters shoot and group great!
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Oct 24, 2015
Certified buyer

Good product

Very good product. I recommand it. I don't agree with the bad reviews on accuracy. Despite a strong wind, accuracy was good on a 20 meters distance. Look of the gun is very realistic. Use is easy. Enjoy! :)
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Sep 16, 2015

Awful accuracy

My dad bought me this gun for Christmas it was a pretty nice package came with 500 RSW premier pellets and I was surprised on how the blow back worked. But then the issues started. The gun has a two part barrel which means the front half stays stationary while the back half moves for more of a "blowback" feature. However ever so often this part gets stuck which means the mag just falls out and won't go back in. To fix this you need to go through another frustrating process of taking the slide off which is by far the most difficult thing I have ever done. There are four pins you need to take out two of them are really easy but the last one is stupidly hard to get out it has a grove on the end which prevent it from moving thi took me the better half of a day to hammer out. Even after all of this I ran out of pellets a while back and switched to steel bbs which work great but destroy the rifleing in the gun so you can't hit the broad side of a barn from 5 yards out. Even after all this the magazine popped out a day or two after I got it fixed and now I'm left with 2500 bbs and 56 cartagies
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Umarex Beretta PX4 Storm Pellet Gun Review

Umarex Beretta PX4 Storm Pellet Gun Review

(1318 raters) 624393 views - 8/31/2010 1:57:26 AM - Umarex Beretta PX4 Storm Pellet Gun Review.

-CO2 Powered
-.177 cal. Pellets & 4.5mm Steel BB
-16 Round Magazine
-Beretta PX4 Storm Replica
-Semi Auto SA/DA
-Blowback Action
-400 FPS

This video is a walkthrough Review of the Umarex Beretta PX4 Storm Pellet Gun. I show off the gun close up and I also take you through many of the features along with some sample targets shot at 25 feet out to demonstrate accuracy.

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.

At well under $100 this replica airgun is a great value and a nice addition to any airgun enthusiasts collection.

Buy this Airgun In the Canada Replica Airguns Store:

Buy this Airgun In the US Replica Airguns Store:

Check out the full review on my website at:
Sig Sauer P250 & P226 - Umarex PX4 Storm - Gamo P25 & MP9 Comparison

Sig Sauer P250 & P226 - Umarex PX4 Storm - Gamo P25 & MP9 Comparison

(192 raters) 20287 views - 7/20/2016 4:40:41 PM
Check out my Sig Sauer P250 & P226 - Umarex PX4 Storm - Gamo P25 & MP9 Comparison full written Post:

Make sure to watch my YouTube video for this Comparison Review as I go into a lot of detail about the similarities and difference with each of these CO2 Blowback Pellet Guns.

Here are some of the main Similarities when comparing the Sig Sauer P250 & P226 - Umarex PX4 Storm - Gamo P25 & MP9:

-All of these CO2 blowback pellet guns are made for each company in Japan (I am assuming from the same factory?)

-All of the listed Pellet Airguns shoot .177 caliber pellets (Can be Alloy or Lead)

-They all have double sided rotary stick magazines that hold 8 rounds on each end for a total of 16 shots per magazine.

-All of the Airguns use 12 gram CO2.

-All compared pellet guns have Blowback operation.

-All of these pellet pistols have single and double action triggers except for the Gamo MP9 which is single action only and needs to be charged on the first shot.

-They all have rifled barrels.

Read my full review located here:

Buy the PX4 Storm in Canada:

Sig Sauer P250:

Sig Sauer P226:

Gamo P-25:

Gamo MP9:

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