#html-body [data-pb-style=URXJ6S6]{justify-content:flex-start;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}Sig Sauer is one of the most popular firearm manufacturers in the world. This replacement barrel fits 9mm Sig Sauer P320. It's threaded 1/2-28 to allow for the attachment of a compensator or suppressor. All Sig Sauer factory replacement barrels are heat treated to increase their toughness and durability. Sig Sauer P320 Threaded Barrel Specifications and Features: Sig Sauer Factory Replacement Barrel Threaded 1/2 - 28 Caliber: 9mm Luger Heat Treated Length: 5.5" No Loaded Chamber Indicator Black Nitron Finish