Smith & Wesson 14401 M&P M2.0 9mm Luger 4.63" Threaded, Black Armornite Stainless Steel

The Smith & Wesson M&P M2.0 9mm threaded barrel is a direct replacement for shooters who want to run suppressors, compensators, or other muzzle devices on their M&P M2.0 pistol. This 4.625-inch Black Armornite stainless steel barrel threads at 1/2-28, the industry standard for most 9mm accessories. It's a straightforward upgrade for an already-capable duty and defensive platform—swap it in, thread on your muzzle mod of choice, and you're ready to shoot quieter or flatter.

Compatibility matters here: this barrel is engineered for M&P M2.0 pistols chambered in 9mm Luger with a 4.25-inch slide. If you're running an older M1.0 generation M&P, this won't fit—stick with M2.0 gen parts. The Armornite finish is S&W's corrosion-resistant stainless steel coating, proven in duty and field use to hold up against sweat, weather, and regular cleaning solvents.

At 5 ounces, the weight is right in line with what you'd expect from a steel barrel this size, with no surprises when you drop it into your slide. Whether you're building a suppressed carry gun, setting up for reduced-noise range days, or adding a compensator for faster splits in training, this barrel is a no-fuss core component.

Key Features

• Threaded 1/2-28 for standard 9mm muzzle devices and suppressors
• 4.625-inch length, engineered for M&P M2.0 9mm platforms with 4.25-inch slides
• Black Armornite stainless steel finish resists corrosion and wear
• Direct drop-in replacement—no gunsmithing required

Specifications

Frequently Asked Questions

Will this barrel fit my M&P M1.0 pistol?

No. This barrel is designed exclusively for M&P M2.0 9mm models with a 4.25-inch slide. It will not fit M1.0 generation M&P pistols.

What muzzle devices can I use with the 1/2-28 thread?

The 1/2-28 thread pattern is the standard for 9mm suppressors, compensators, brakes, and flash hiders. Any muzzle device with that thread pitch will work—you've got thousands of options from major manufacturers.

Is this a direct drop-in replacement?

Yes. This barrel is a direct replacement for the factory barrel in an M&P M2.0 9mm with a 4.25-inch slide. No modification or gunsmithing is required.

Does this barrel include sights or other components?

No. This is the barrel only. You'll need to source your own muzzle device if you want to thread something on, and no other components are included.