The Beretta Px4 Storm is a full-size .40 S&W DA/SA semi-automatic pistol with a 4-inch rotating barrel, 10+1 capacity, and 1.7 lbs weight. It has a Black Bruniton slide finish, ambidextrous decocker safety, interchangeable backstraps, and 3-dot contrast sights. 
 

Key Specifications 

• Brand: Beretta USA 
• Model: Px4 Storm 
• Caliber: .40 S&W 
• Capacity: 10+1 rounds 
• Barrel Length: 4 inches 
• Weight: 1.7 lbs (27.7 oz) 
• Action Type: Double/Single Action (DASA) 
• Safety Features: Ambidextrous decocker safety 
• Grip Type: Black interchangeable backstrap 
• Sights Configuration: 3-Dot contrast sights 
   

Detailed Features 

1. The DA/SA action allows the first shot from a decocked position with a longer trigger pull, followed by lighter single-action pulls for subsequent shots. 
2. The rotating barrel design reduces felt recoil compared to standard tilting-barrel pistols, which helps with faster follow-up shot accuracy. 
3. Interchangeable backstraps let shooters adjust grip circumference for a better fit. 
4. The Black Bruniton slide finish resists corrosion and wear. 
5. The ambidextrous decocker safety works for both right- and left-handed operators. 
6. The 3-dot sights aid target acquisition across lighting conditions. 
    

Usage Scenarios 

The rotating barrel and .40 S&W caliber make the Px4 Storm a practical choice for home defense where stopping power and manageable follow-up shots both matter. The consistent action and accurate sights translate to competitive shooting. The pistol is also California-compliant, which matters for buyers in that state.

Ergonomics and comfort during extended use are the most consistently praised aspects of the Px4 Storm. The grip texture gets positive mentions, and owners report reliable performance with a variety of ammunition types.

The rotating barrel design is specifically credited for reducing the .40 S&W recoil impulse, which owners say translates to more accurate follow-up shots. The DA/SA trigger gets mixed feedback: some shooters value the versatility, others find the pull inconsistent compared to a simpler striker-fired system. The full-size dimensions are a practical concern for concealed carry but are seen as an asset for accuracy and control at the range. Price is generally considered reasonable for the feature set. California compliance is a positive for that market.