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Umarex CO2 Air Pistol Px4 Storm Beretta 4.5mm
Air Pistols

Umarex CO2 Air Pistol Px4 Storm Beretta 4.5mm

The powerful recoil effect of this CO pistol offers a very realistic shooting experience. A special feature is the magazine with two 8-shot cylinders. After emptying one cylinder, the shooter simply...

The powerful recoil effect of this CO pistol offers a very realistic shooting experience. A special feature is the magazine with two 8-shot cylinders. After emptying one cylinder, the shooter simply needs to remove the magazine and turn it to achieve another eight shots. This works for both BB and 4.5 mm pellets. The Px4 Storm can take both types of...

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  • Movement

    Carbon Dioxide (CO2) Capsules

    The CO₂ cartridge is a small, single-use metal cylinder filled with compressed carbon dioxide (CO₂).


    It is placed in the gun as a power source for propelling the pellets (or for greater realism with Blowback).
  • Caliber 4.5 mm
  • Magazine 2x8 rounds

  • Trigger (Trigger Action)

    Single Function

    It means that the trigger performs only one action: it releases the hammer to fall and fire. The trigger does not cock the hammer by itself.

    - Trigger feel: Usually light and with a shorter travel compared to Double Action.

    - Accuracy: The lighter and crisper character reduces loss of aim when pulling the trigger. For this reason, it is a common choice for competition/target pistols and for shooters who prefer fine control.

    - Speed: Although the SA trigger is quick to pull, it requires time/movement to cock before each shot.

    - Safety: The light trigger can be more sensitive to accidental discharge if not handled properly. It is often combined with other safety mechanisms.

  • Type of Pellet

    Metal Projectiles (Pellets)

    Pellets are specially shaped projectiles (usually made of lead or alloy) designed for rifled barrels. Their distinctive shape ("diabolo" with a narrow waist and widened rear) helps seal the barrel and stabilize flight (gyroscopic effect), providing better accuracy than spherical BBs in rifled barrels.

    BBs

    BBs are spherical projectiles, usually small balls used in airsoft pistols/rifles (6 mm) and in certain BB-gun type airguns (.177 / 4.5 mm).
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Product report

Description

Description

The powerful recoil effect of this CO₂ pistol offers a very realistic shooting experience. A special feature is the magazine with two 8-shot cylinders. After emptying one cylinder, the shooter simply needs to remove the magazine and turn it to achieve another eight shots. This works for both BB and 4.5 mm pellets. The Px4 Storm can take both types of ammunition. The safety slide for disarmament is another important detail.

  • Caliber: 4.5mm (.177)
  • Energy Source: CO2 cartridge
  • Magazine Capacity: 2 cylinders of 8 shots
  • Velocity: 115 m/s
  • Energy: 2.1 Joules (BBs) & 2.5 (Pellet)
  • Total Length: 192 mm
  • Weight: 755 gr

Manufacturer

Manufacturer Details

Warnings & Safety Information
See full description

Specifications

Specifications

Mechanism
Carbon Dioxide (CO2) Capsules

Mechanism

Carbon Dioxide (CO2) Capsules

The CO₂ cartridge is a small, single-use metal cylinder filled with compressed carbon dioxide (CO₂).


It is placed in the gun as a power source for propelling the pellets (or for greater realism with Blowback).
Caliber
4.5 mm
Trigger (Trigger Action)
Single Function

Trigger (Trigger Action)

Single Function

It means that the trigger performs only one action: it releases the hammer to fall and fire. The trigger does not cock the hammer by itself.

- Trigger feel: Usually light and with a shorter travel compared to Double Action.

- Accuracy: The lighter and crisper character reduces loss of aim when pulling the trigger. For this reason, it is a common choice for competition/target pistols and for shooters who prefer fine control.

- Speed: Although the SA trigger is quick to pull, it requires time/movement to cock before each shot.

- Safety: The light trigger can be more sensitive to accidental discharge if not handled properly. It is often combined with other safety mechanisms.
Frame
Plastic
Bullet type
Metal Projectiles (Pellets), BBs

Bullet type

Metal Projectiles (Pellets)

Pellets are specially shaped projectiles (usually made of lead or alloy) designed for rifled barrels. Their distinctive shape ("diabolo" with a narrow waist and widened rear) helps seal the barrel and stabilize flight (gyroscopic effect), providing better accuracy than spherical BBs in rifled barrels.

BBs
BBs are spherical projectiles, usually small balls used in airsoft pistols/rifles (6 mm) and in certain BB-gun type airguns (.177 / 4.5 mm).
Magazine Capacity
2x8 rounds
Blowback
No
Weight
700 gr

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

See all specifications

Reviews (2)

Reviews

3.0
2
3.0
Review this product
  1. 5 stars
    0
  2. 4 stars
    0
  3. 1
  4. 2 stars
    0
  5. 1
Review this product
  • gerasimos_stamoulis
    3
    gerasimos_stamoulis

    You need to be very careful with the trigger; you have to let it return completely to its original position while shooting. Otherwise, it gets stuck, misfires, etc. Generally, one of the most sensitive weapons I've shot, identical to the original, beautiful but with its little issues. I sent one back for a replacement, and fortunately, they gave me a second one without much hassle since the trigger was sticking; it had a sponge-like feel and unfortunately only misfired. The second one is better, but every shot requires reloading!! Something I learned later due to the single-action trigger.

    Translated from Greek ·
    Did you find this review helpful?
  • peristeri244
    1
    1 out of 2 members found this review helpful
    peristeri244

    Personally, I had a problem after two ampoules, the trigger got stuck and from what I searched on the internet, it seems to be a general issue. I would never buy Umarex guns or similar style guns again. It would be better to get a spring-powered air rifle a thousand times

    Translated from Greek ·
    Did you find this review helpful?
  • gerasimos_stamoulis
    3
    gerasimos_stamoulis

    You need to be very careful with the trigger; you have to let it return completely to its original position while shooting. Otherwise, it gets stuck, misfires, etc. Generally, one of the most sensitive weapons I've shot, identical to the original, beautiful but with its little issues. I sent one back for a replacement, and fortunately, they gave me a second one without much hassle since the trigger was sticking; it had a sponge-like feel and unfortunately only misfired. The second one is better, but every shot requires reloading!! Something I learned later due to the single-action trigger.

    Translated from Greek ·
    0
  • peristeri244
    1
    peristeri244

    Personally, I had a problem after two ampoules, the trigger got stuck and from what I searched on the internet, it seems to be a general issue. I would never buy Umarex guns or similar style guns again. It would be better to get a spring-powered air rifle a thousand times

    Translated from Greek ·
    1
  • See all

Description & Specifications

The powerful recoil effect of this CO₂ pistol offers a very realistic shooting experience. A special feature is the magazine with two 8-shot cylinders. After emptying one cylinder, the shooter simply needs to remove the magazine and turn it to achieve another eight shots. This works for both BB and 4.5 mm pellets. The Px4 Storm can take both types of ammunition. The safety slide for disarmament is another important detail.

  • Caliber: 4.5mm (.177)
  • Energy Source: CO2 cartridge
  • Magazine Capacity: 2 cylinders of 8 shots
  • Velocity: 115 m/s
  • Energy: 2.1 Joules (BBs) & 2.5 (Pellet)
  • Total Length: 192 mm
  • Weight: 755 gr

Manufacturer

Manufacturer Details

Warnings & Safety Information
Mechanism
Carbon Dioxide (CO2) Capsules

Mechanism

Carbon Dioxide (CO2) Capsules

The CO₂ cartridge is a small, single-use metal cylinder filled with compressed carbon dioxide (CO₂).


It is placed in the gun as a power source for propelling the pellets (or for greater realism with Blowback).
Caliber
4.5 mm
Trigger (Trigger Action)
Single Function

Trigger (Trigger Action)

Single Function

It means that the trigger performs only one action: it releases the hammer to fall and fire. The trigger does not cock the hammer by itself.

- Trigger feel: Usually light and with a shorter travel compared to Double Action.

- Accuracy: The lighter and crisper character reduces loss of aim when pulling the trigger. For this reason, it is a common choice for competition/target pistols and for shooters who prefer fine control.

- Speed: Although the SA trigger is quick to pull, it requires time/movement to cock before each shot.

- Safety: The light trigger can be more sensitive to accidental discharge if not handled properly. It is often combined with other safety mechanisms.
Frame
Plastic
Bullet type
Metal Projectiles (Pellets), BBs

Bullet type

Metal Projectiles (Pellets)

Pellets are specially shaped projectiles (usually made of lead or alloy) designed for rifled barrels. Their distinctive shape ("diabolo" with a narrow waist and widened rear) helps seal the barrel and stabilize flight (gyroscopic effect), providing better accuracy than spherical BBs in rifled barrels.

BBs
BBs are spherical projectiles, usually small balls used in airsoft pistols/rifles (6 mm) and in certain BB-gun type airguns (.177 / 4.5 mm).
Magazine Capacity
2x8 rounds
Blowback
No
Weight
700 gr

Important information

Specifications are collected from official manufacturer websites. Please verify the specifications before proceeding with your final purchase. If you notice any problem you can report it here.

Reviews (2)

3.0
2
3.0
Review this product
  1. 5 stars
    0
  2. 4 stars
    0
  3. 1
  4. 2 stars
    0
  5. 1
Review this product
  • gerasimos_stamoulis
    3
    gerasimos_stamoulis

    You need to be very careful with the trigger; you have to let it return completely to its original position while shooting. Otherwise, it gets stuck, misfires, etc. Generally, one of the most sensitive weapons I've shot, identical to the original, beautiful but with its little issues. I sent one back for a replacement, and fortunately, they gave me a second one without much hassle since the trigger was sticking; it had a sponge-like feel and unfortunately only misfired. The second one is better, but every shot requires reloading!! Something I learned later due to the single-action trigger.

    Translated from Greek ·
    Did you find this review helpful?
  • peristeri244
    1
    1 out of 2 members found this review helpful
    peristeri244

    Personally, I had a problem after two ampoules, the trigger got stuck and from what I searched on the internet, it seems to be a general issue. I would never buy Umarex guns or similar style guns again. It would be better to get a spring-powered air rifle a thousand times

    Translated from Greek ·
    Did you find this review helpful?
  • gerasimos_stamoulis
    3
    gerasimos_stamoulis

    You need to be very careful with the trigger; you have to let it return completely to its original position while shooting. Otherwise, it gets stuck, misfires, etc. Generally, one of the most sensitive weapons I've shot, identical to the original, beautiful but with its little issues. I sent one back for a replacement, and fortunately, they gave me a second one without much hassle since the trigger was sticking; it had a sponge-like feel and unfortunately only misfired. The second one is better, but every shot requires reloading!! Something I learned later due to the single-action trigger.

    Translated from Greek ·
    0
  • peristeri244
    1
    peristeri244

    Personally, I had a problem after two ampoules, the trigger got stuck and from what I searched on the internet, it seems to be a general issue. I would never buy Umarex guns or similar style guns again. It would be better to get a spring-powered air rifle a thousand times

    Translated from Greek ·
    1
  • See all