This is a Sig Sauer Barrel chambered in 9MM, model BBL-226-9-T.
Upgrade or replace the barrel on your P226 with this original SIG SAUER part. The threaded barrel is chambered in 9mm and allows you to attach a suppressor or other muzzle device. A knurled thread cap protects the end when no device is attached. SIG SAUER factory replacement pistol barrels are specially heat-treated for toughness and durability. Thread pitch: 13.5 x 1LH
Features:
Knurled thread cap included
Specially heat-treated for toughness and durability
Thread pitch 3.5X1 LH