This SIG Sauer factory replacement barrel (SIG part number BBLMK25T) upgrades or replaces the barrel on a P226 pistol and is chambered in 9mm Luger with a 4.9-inch threaded muzzle. Built to the same specification as the military MK25 model, it is 126mm long, broached, and both chrome-lined and phosphated for extreme corrosion resistance. The threading lets shooters attach a suppressor or other muzzle device, and a knurled thread cap is included to protect the threads when nothing is mounted. Like every SIG Sauer factory barrel, it is specially heat-treated for toughness and durability.

Key Specifications

• Chambered in 9mm Luger.
• Barrel measures 4.9 inches in length.
• Rifled with a 1:10-inch twist rate.
• Threaded for a suppressor or muzzle device.
• Includes a knurled thread cap to protect the threads.
• Rifling is broached for consistent accuracy.
• Chrome-lined bore for durability.
• Phosphated for extreme corrosion resistance.
• Built to MK25 military specification.

Frequently Asked Questions

What pistol does this barrel fit? The SIG Sauer P226.

Can I mount a suppressor? Yes, the muzzle is threaded, and a knurled thread cap is included for when nothing is mounted.

What makes the MK25 barrel different? It is chrome-lined and phosphated to the same corrosion-resistance standard as the military MK25 model.

SIG Sauer P226 MK25 9mm Threaded Barrel For Sale

Upgrade your P226 with a genuine chrome-lined, suppressor-ready factory barrel. Order this SIG Sauer barrel from our handgun barrels lineup, and our Lubbock, Texas team will get it ready as soon as it is available to ship.