Beretta M9A4 G 9MM 5 1 Threaded Barrel FDE 18RD

About this product

The Beretta M9A4 G is the decocker-only variant of Beretta's modernized M9A4 line - the 'G' designates a version without the ambidextrous manual safety lever, so the pistol decocks automatically when you press the decocker and is ready to fire again with a simple double-action pull. This Flat Dark Earth example comes with a 5.1-inch threaded barrel and an optics-ready slide, putting it squarely in the category of a modern military-pattern pistol built for both duty use and civilian range and carry work.

What makes the 'G' model different from a standard M9A4?

Where the standard M9A4 has a frame-mounted manual safety that also functions as a decocker, the G variant strips that down to decocker-only operation. That's a deliberate design choice for shooters who want fewer manual steps to get the gun into action - there's no safety to sweep off before firing, only a decocker to lower the hammer safely when you want to holster or set the gun down.

What does the threaded barrel and optics-ready slide add?

The 5.1-inch threaded barrel uses a standard 1/2x28 thread pitch, making it ready for a suppressor without an aftermarket barrel swap. The slide is cut for direct mounting of today's common red dot optics, and the package still includes tritium night sights so the gun is fully usable with irons if you never add a dot.

What's included in the box?

This model ships with three 18-round magazines, a beveled magazine well for faster reloads, a 3-slot Picatinny rail on the dust cover for lights or lasers, and Beretta's Xtreme Trigger System for a shorter reset on follow-up shots. Some M9A4 packages also include a dedicated ammo-can style carrying case.

The M9A4 line builds on Beretta's original M9 service pistol, which spent decades as the U.S. military's standard sidearm, and shooters searching for an M9A4 are often drawn to that lineage as much as the modern upgrades. The G variant specifically appeals to shooters who trained on, or prefer, a decocker-only manual of arms over a traditional thumb safety. Beretta also reworked the grip on the M9A4 with a thinner, more aggressively textured 92X-style panel compared to older M9 pistols, aimed at shooters who found the classic M9 grip too wide for smaller hands.

The M9A4's open-slide design - a legacy of the original 92-series Beretta architecture - also makes it easier to clear a malfunction or visually check the chamber compared to fully enclosed slide designs, a detail some shooters specifically value in a duty or home-defense pistol. Combined with the steel slide rails and aluminum frame, the M9A4 G is built for a long service life under heavy round counts rather than optimized purely for minimum weight. Ammunition compatibility is straightforward since it's chambered in standard 9mm Luger, and the included Picatinny rail on the dust cover accepts common weapon lights and lasers sized for full-size duty pistols. Shooters upgrading from an older Beretta 92FS or M9 will find the manual of arms familiar, since the core takedown and disassembly process carries over from decades of the same basic design.

What should California buyers check before ordering?

California limits magazines to 10 rounds regardless of the 18-round magazines Beretta ships with this pistol, and roster/compliance status for specific M9A4 configurations can change. Confirm the current California status of this exact model and which magazines your FFL will legally be able to hand you before you place an order.

How does the buying process work?

As a firearm, the M9A4 G ships to a licensed FFL dealer rather than to your home. You'll complete a background check and any required state waiting period at the dealer before taking possession. Checkout here is processed through secure checkout, and your FFL will charge its own separate transfer fee.