Sig Sauer P320 9mm Luger 4.7" Gold Titanium Nitride Steel Replacement Barrel

The Sig Sauer P320 Replacement Barrel is a factory OEM drop-in barrel chambered in 9mm Luger and built specifically for P320 full-size pistols. Machined from steel and finished in a striking Gold Titanium Nitride coating, this 4.70" barrel installs in any standard P320 full-size slide without fitting.

The Titanium Nitride treatment does more than dress up the slide. The coating dramatically increases surface hardness and reduces friction between the bullet jacket and bore, providing increased lubricity, smoother feeding, and noticeably easier cleanup compared to a standard nitrided barrel. It also adds corrosion resistance, making this an excellent choice for shooters running suppressed P320s or anyone who puts serious round counts through their pistol.

This Sig Sauer 8900791 barrel is configured with no sights and no loaded chamber indicator (LCI) cut, making it the correct factory replacement for P320 slides that originally shipped without an LCI. As a true OEM part, it maintains the exact lockup geometry, chamber dimensions, and tolerances Sig Sauer built into the original equipment barrel, so point of impact and reliability match the factory barrel exactly.

Whether you are replacing a worn factory barrel, building a custom slide, or want the eye-catching gold finish on your P320, this Sig Sauer replacement barrel delivers authentic factory quality.