Zaffiri Precision Pistol Barrel, 9MM, Nitride Finish, Black, Fits Sig P320 Full Size ZP.320FBBN High quality performance you demand with an easy drop-in barrel upgrade. This replacement barrel is precision manufactured in the USA to the highest standards providing exceptional accuracy. Conventional rifling with a polished chamber and bore to perform well with lead" plated" and jacketed bullets. This barrel is ready-to-use and is a perfect replacement for your existing Sig barrel. Does NOT fit the P320C (Compact) or X-Carry.