The SilencerCo 9mm Threaded Barrel for the S&W M&P (brand part no. AC2023) is a replacement barrel that gives an M&P a 1/2×28 threaded muzzle. SilencerCo machines it from 416R stainless steel and finishes it in black nitride, a coating built to hold up under hard use. It is chambered in 9mm Luger and rifled with a 1:10-inch right-hand twist. Every pistol suppressor needs a threaded host barrel, which makes this the starting point for anyone who wants to run an M&P suppressed or fit a thread-on muzzle device.

Key Specifications

• The barrel is made for the S&W M&P pistol, so it replaces the factory barrel on that platform.
• Chambering is 9mm Luger, matching the cartridge the M&P 9 is built around.
• The muzzle thread is 1/2×28, a pitch used by many 9mm pistol suppressor mounts.
• The rifling uses a 1:10-inch right-hand twist, which describes one full turn of the bullet in ten inches of barrel.
• The barrel is machined from 416R stainless steel, a grade known for corrosion resistance.
• The finish is black nitride, a surface treatment that adds wear resistance and a low-glare look.
• The barrel is a threaded type, so a suppressor or compatible thread-on device can be attached at the muzzle.

Frequently Asked Questions

Which pistol is this barrel made for? It is made for the S&W M&P in 9mm Luger and replaces the barrel in that pistol.

What thread does the barrel use? The muzzle is threaded 1/2×28. Match that pitch to the mount on your suppressor or muzzle device before you order.

What is it made of and how is it finished? SilencerCo machines it from 416R stainless steel and finishes it in black nitride.

Buy the SilencerCo 9mm Threaded Barrel for S&W M&P

A threaded barrel that matches the pistol is what makes a suppressor setup work, and this one is cut 1/2×28 for the M&P. Order it from the SilencerCo lineup and browse more handgun barrels from our Lubbock, Texas gun shop for fast, direct shipping.