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Sig Sauer

P220 .45ACP THREADED BARREL, 4.9"

Original Sig

SAUER factory replacement barrel for

Chambered .45acp

Threaded Barrel

Allows attachment of a suppressor

Knurled Thread

Cap protects the muzzle when

Thread Pitch

Is .578x28 TPI

$249.99
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SKU: BBL-220-45-T

Overview

This factory SIG SAUER barrel is intended for P220 Full-size owners who want a threaded .45ACP option for suppressor use or other muzzle devices. It includes a knurled thread cap to cover the muzzle when no accessory is installed, helping keep the threaded end protected during storage and transport. As an original replacement part, it is suited to shooters looking to replace or upgrade their existing barrel with a factory-fit component. It is also listed as compatible with the P227.

Why Hunters Choose the Sig Sauer

Original Sig

SAUER factory replacement barrel for

Threaded .45acp

Barrel supports suppressor or other

Knurled Thread

Cap helps protect the muzzle

Factory Replacement

Barrel is specially heat-treated for

Also Compatible

The P227, adding useful cross-platform

Key Features

  • Original SIG SAUER factory replacement barrel for the P220 Full-size
  • Chambered in .45ACP
  • Threaded barrel allows attachment of a suppressor or other muzzle device
  • Knurled thread cap protects the muzzle when no device is attached
  • Thread pitch is .578x28 TPI
  • Also compatible with the P227

Best Used For

  • P220 Full-size owners needing a factory replacement threaded barrel for .45ACP use
  • Shooters planning suppressor or muzzle-device setup on a compatible SIG SAUER pistol
  • Users who want a replacement barrel with a protective knurled thread cap included
  • P227 owners seeking a compatible threaded barrel option for the same caliber

Specifications

Barrel Length4.9"
Caliber.45ACP
Compatible ModelsP220 Full-size, P227
Heat TreatmentSpecially heat-treated
Part TypeFactory replacement pistol barrel
Thread CapKnurled thread cap
Thread Pitch.578x28 TPI
ThreadedYes

Pros

  • Original SIG SAUER factory replacement barrel for P220 Full-size pistols
  • Threaded .45ACP barrel supports suppressor or other muzzle device attachment
  • Knurled thread cap helps protect the muzzle when no device is installed
  • Factory replacement barrel is specially heat-treated for toughness and durability
  • Also compatible with the P227, adding useful cross-platform fitment

Considerations & Trade-offs

  • This barrel is intended for the P220 Full-size, so fitment should be checked carefully before purchase; it is also noted as compatible with the P227.
  • The threaded muzzle adds suppressor or muzzle-device compatibility, but it also means you’ll need to manage the thread cap when the barrel is not in use.
  • Thread pitch is specified as .578x28 TPI, so any attached device must match that threading.
  • This is a replacement/upgrade barrel rather than a complete pistol component, so it only addresses the barrel portion of the setup.

Suggested Comparisons

  • Threaded pistol barrels
  • Pistol suppressor mounts and muzzle devices
  • Factory replacement handgun parts
  • SIG SAUER P220/P227 accessories

Suggested Accessories

  • Suppressor
  • Muzzle device
  • Thread protector
  • Pistol cleaning kit

Frequently Asked Questions

What pistol is this threaded barrel made for?

It is an original SIG SAUER replacement barrel for the P220 Full-size. The product note also says it is compatible with the P227.

What caliber is this barrel chambered in?

It is chambered in .45ACP.

What is the thread pitch?

The listed thread pitch is .578x28 TPI.

Does it come with anything to protect the threads when no device is attached?

Yes. The description says it includes a knurled thread cap to protect the end when no device is attached.

Can this barrel be used with a suppressor or other muzzle device?

Yes. The threaded barrel is described as allowing attachment of a suppressor or other muzzle device.