Beretta PX4 Storm Ultimate Guide - Review, Build List, and much more!

What I love about Beretta is its ability to embody pure Italian craftsmanship. What do I mean by that? Think of Ferrari, Lamborghini, and Panerai—brands synonymous with passion, performance, and, most importantly, impeccable design. The PX4 captures this essence perfectly: a firearm built for passionate shooters who demand high performance, all wrapped in a lightweight package with a design that stands apart from anything else on the market. Simply put—Italian excellence.

It’s unfortunate that the PX4 never gained widespread popularity, either among the public or law enforcement. Yet, for reasons unknown, Beretta has never discontinued it. Even more puzzling, they’ve hardly made any changes to it in over 20 years since its release. However, Earnest Langdon of Langdon Tactical fell in love with this platform and persuaded Beretta to produce the “Cheater PX4,” also known as the G-SD model. This variant is essentially a .40 caliber PX4 chambered in 9mm, effectively creating a bull-barrel PX4.

As some of you may know, I didn’t just shoot the G-SD model in competition—I fully committed to developing the PX4 for competitive shooting in both USPSA and IDPA. It took extensive effort to refine this firearm into a true competitor, and I’m excited to share that journey with all of you!

My Build List with Links… Good To Great (may PX4 G-SD below this one)

• Gun - Beretta PX4 INOX .40 S&W

• Trigger Package

  • LTT Trigger Job in a Bag

    • Trigger Bar - LTT Optimized Trigger Bar. Works only for 9mm & 40cal

    • Hammer - Match

    • Hammer Spring - 11lb

  • Gray Guns Flat Trigger

• Grips & Other

  • PX4 Full Size Backstraps by LOK Grips

  • Talon Grips- PX4 (Full-Size)

  • Beretta PX4 Mag Release Kit

  • Beretta Stealth Lever Kit

  Spring Setup

  • DPM Beretta PX4 Storm F/G/C/D Full Size Mechanical Recoil Reduction System

    • Use code GGUNNER and save!

• Sights

  • Ameriglo Sight Set

140mm Magazine Setup for USPSA

• 24 Round using Standard 9mm Magazine Tube

  • CSRG Multi-Platform Competition Follower & Spring Kit

    • Contact CSRG directly regarding Updated follower regarding the release. Not all PX4s experience this issue and so they are reviewing on an as needed basis

  • Springer Precision Magazine Extension 140mm

• 22 Round Setup Using a Factory Follower and 9mm Magazine Tube

  • Springer Precision Magazine Extension (+4 Round Capacity)

  • Trim 1/4” off of the rear of the follower (see Good to Great Video @ 13:08)

• 24 Round Mag Setup using 40 S&W Magazine Tube

  • MBX Extreme - Competition Replacement Springs & Followers - See Directions Below

    • Under “ COMPETITION REPLACEMENT FOR SPRING/FOLLOWER SETS CZ, CANIK, & BERETTA MBX MAGAZINES/TUBES”

    • Goto the First Drop Down Menu for “Spring/Follower Set for MBX CZ, Canik, & Beretta” then select “140mm .40cal Set with Competition Follower (available for CZ Large frame only)(will not lock back the slide)”

  • Springer Precision Magazine Extension 140mm

Magazine Modification for easier reloads - Ill be uploading more pics soon

1. Mark 2mm on the left side on the Slide Stop channel - The factory follower should still have enough room to still lean against this.

2. Mark about the center of the front of the mag. This will create your angle

3. Cut at angle from the 2mm mark to the center

4. bevel the edges so you dont create an additional catch point - that it!

If you’d like to see run Matches with this gun… Check out my Instagram account… yes my account is private as I just want to share info on there to my audience and not whomever… so just request and I’ll accept!