Silencerco AC2023 Threaded Barrel for M&P 9mm, 1/2x28 Threads

Adding a suppressor to your Smith & Wesson M&P 9mm doesn't mean replacing the entire gun—the SilencerCo AC2023 threaded barrel for M&P 9mm does the heavy lifting with a factory-compatible drop-in swap. This replacement barrel threads your standard M&P for suppressor use, turning your centerfire pistol into a hearing-friendly range tool or hunting handgun without any gunsmithing. Built from high-grade stainless steel to original factory dimensions, it slides in like the part it replaces—no fitting, no guesswork.

The 1/2x28 threads are the industry standard for 9mm suppressors, so you'll have zero compatibility headaches pairing it with nearly any modern silencer in its class. The rifling is a 1-in-10-inch right-hand twist, spec'd to handle full-power 9x19mm loads reliably. Whether you're setting up for subsonic shooting, reducing noise at the range, or building a versatile home defense gun that won't ring your ears, this barrel gets you 90% of the way there—the other 10% is choosing your suppressor.

Important: this barrel fits full-size M&P 9mm pistols only and is not compatible with the 5-inch Pro Series. Confirm your model before ordering. Once installed, you'll have a suppressor-ready handgun that looks and functions like factory spec, minus the sonic signature.

Key Features

• 1/2x28 threaded muzzle—standard threads for 9mm suppressors
• High-grade stainless steel construction machined to factory dimensions
• Drop-in replacement design—no modifications or gunsmithing required
• 1-in-10-inch right-hand rifling for reliable 9x19mm performance
• Converts standard M&P 9mm to suppressor-ready setup

Specifications

Frequently Asked Questions

Will this barrel fit my S&W M&P 9mm?

This AC2023 barrel is designed for full-size M&P 9mm pistols and fits as a drop-in replacement. It is NOT compatible with the M&P 5-inch Pro Series. Verify your M&P model before purchase to ensure compatibility.

What suppressors work with the 1/2x28 threads?

The 1/2x28 thread specification is the standard for 9mm suppressors, so you'll have broad compatibility with most modern silencers designed for that caliber. Confirm your chosen suppressor's thread spec before purchase.

Is this a drop-in replacement?

Yes. The barrel is machined to factory dimensions and installs without modifications, fitting or gunsmithing. Simply remove your factory barrel and install the AC2023 in its place.

Can I use subsonic ammunition with this barrel?

The barrel is rifled with a 1-in-10-inch twist and is designed to reliably handle standard 9x19mm loads. Consult the suppressor manufacturer for subsonic compatibility recommendations.