Silencerco AC2024 Threaded Barrel for M&P 45 - .578x28 Thread Pitch

Running a suppressor on your M&P 45 means starting with the right foundation—a quality threaded barrel purpose-built for the job. The SilencerCo AC2024 threaded barrel for M&P 45 gives you exactly that: a 5.1-inch barrel chambered in .45 ACP with .578x28 thread pitch, designed to pair with SilencerCo suppressors and engineered to handle the rigors of suppressed shooting without compromise.

SilencerCo built this barrel from 416R stainless steel and finished it in black nitride—a combination that resists corrosion and wear through extended use, whether you're putting rounds downrange at the bench or running drills in the field. The nitride finish is durable enough to handle carbon buildup, cleaning solvents, and the pressure cycles that come with suppressed fire. This is a barrel made to last, not a throwaway component.

Installation is straightforward for anyone comfortable doing barrel work on an M&P 45, and the .578x28 thread pitch is the industry standard for SilencerCo's M&P suppressor lineup. The barrel ships with a thread protector to keep the muzzle threads clean and safe until you're ready to mount your suppressor. Keep in mind that suppressor-ready shooting also requires a piston compatible with your chosen suppressor—the barrel itself is the first piece of the puzzle.

Key Features

• 416R stainless steel construction with black nitride finish for corrosion resistance and durability
• 5.1-inch length, .45 ACP chambering
• .578x28 thread pitch for compatibility with SilencerCo M&P suppressors
• Includes thread protector for safe transport and storage
• Purpose-built for suppressed shooting and hard use

Specifications

Frequently Asked Questions

Will this barrel work with my M&P 45 suppressor?

The AC2024 is threaded with .578x28 pitch, which is the standard thread pattern for SilencerCo M&P suppressors. Verify your suppressor's thread specification before purchase to ensure compatibility.

What do I need besides this barrel to run a suppressor on my M&P 45?

Beyond the threaded barrel, you'll need a suppressor and a compatible piston. The barrel itself does not include a piston; that's a separate component matched to your specific suppressor model.

Is the thread protector removable and reusable?

Yes, the thread protector is included with the barrel and can be removed when you mount your suppressor. Keep it handy to protect the threads when the suppressor is not mounted.

Can I use this barrel for normal unsuppressed shooting?

The AC2024 is designed as a suppressor-ready barrel. While it can technically be fired without a suppressor mounted, its primary purpose and design is for use with a SilencerCo suppressor.