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Faxon Duty Series 9mm 3.1″ Threaded Barrel for M&P Shield

UPC: 816341028470

$90.00

3 in stock

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Description

Faxon's Duty Series barrel is a straightforward way to get more out of your M&P Shield without sending anything off to a gunsmith. It drops right into a factory-spec Shield slide, and thanks to Faxon's tighter-than-OEM tolerances, you get a more consistent lockup and better grouping than the barrel that came in the box. The 1/2×28 threaded muzzle opens the door to compensators, suppressors, or a thread protector for everyday carry.

What Sets the Duty Series Barrel Apart

These are machined 100% in-house at Faxon's Cincinnati facility from stress-relieved 4150 CMV steel, then treated with a salt bath black nitride finish inside and out. That coating boosts lubricity, wear resistance, and corrosion protection, which matters on a carry gun that spends time riding against sweat and holster leather. The barrel wears Faxon's signature "X" logo engraved on the hood along with caliber identification on the ejection port side, so it looks the part too.

Twist Rate and Rifling on the Faxon Shield Barrel

The 1:10 twist is a versatile rate that stabilizes the full spread of 9mm bullet weights, from lighter range loads to heavier defensive rounds. Faxon went with conventional rifling here rather than polygonal, which means you can safely run cast lead bullets through it, a nice bonus if you cast or shoot budget reloads. The chamber is cut to 9mm SAAMI spec and finished with an 11-degree target crown to help squeeze out cleaner accuracy.

Fitment You Should Know About

This barrel fits the 3.1" Shield lineup, covering the Shield 1.0, 2.0, and the newer Shield Plus. One thing worth checking before you order: Faxon's Shield barrels are not drop-in compatible with pistols that have a loaded chamber indicator lever installed, so if your Shield has that feature you'll want to confirm compatibility first. Everything Faxon builds here is backed by their Lifetime Guarantee.

Key Specifications

  • Manufacturer: Faxon Firearms
  • Model: Duty Series
  • MPN: M&PA910NSNOQ-T
  • UPC: 816341028470
  • Caliber: 9mm Luger
  • Fitment: M&P Shield 1.0 / 2.0 / Shield Plus (3.1")
  • Barrel Length: 3.1 in
  • Muzzle Thread: 1/2×28
  • Twist Rate: 1:10
  • Rifling: Conventional (cast bullet compatible)
  • Material: 4150 CMV Steel
  • Finish: Black Salt Bath Nitride (QPQ)
  • Chamber: 9mm SAAMI
  • Crown: 11-degree Target Crown
  • Warranty: Faxon Lifetime Guarantee

What’s Included

  • Faxon Duty Series threaded barrel

Frequently Asked Questions

Will this Faxon Duty Series barrel drop into my M&P Shield without gunsmithing?

Yes, it's designed as a direct replacement for factory-spec Shield slides with no fitting or modifications needed. It covers the Shield 1.0, 2.0, and Shield Plus with 3.1" barrels. Just note that Faxon's Shield barrels are not drop-in compatible with pistols that have a loaded chamber indicator lever installed, so confirm that before ordering if you're unsure.

What threads does the barrel use, and will a suppressor fit?

The muzzle is threaded 1/2×28, which is the standard pitch for 9mm suppressors and compensators. That makes it easy to run most 9mm cans or a muzzle device without hunting for oddball adapters. When you're not running anything on the end, a thread protector keeps the threads clean and undamaged.

Can I shoot cast lead bullets through the Duty Series barrel?

You can. Faxon used conventional rifling rather than polygonal, which means cast lead and budget reloads are fair game. That opens up cheaper practice ammo and is a plus if you cast your own.

Is this barrel more accurate than the factory M&P Shield barrel?

In practice, yes. Faxon machines these to tighter tolerances than OEM, which produces a more consistent lockup and typically better grouping. The 11-degree target crown and SAAMI-spec chamber help keep things tight downrange.

Additional information

UPC

816341028470

Manufacturer

Manufacturer Part Number

M&PA910NSNOQT

Model

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