Zaffiri Precision match grade barrels for Sig Sauer P365. High quality performance you demand with an easy drop-in barrel upgrade. his 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. Available with Titanium Nitride (TiN) Gold, Black Nitride, or Stainless finishes Specifications Fit: Sig P365 Compatible Drop in fit 9mm Threadless Flush & Crown length (see photos) SAAMI Spec chamber Quality: 416R Stainless Steel Rifling: Broach Cut 6 Groove Twist: 1/10LH Stress relieved and heat treated to RC 40-42 Target crown and oversized lock up area. Fully supported chamber and improved feed ramp design Conventional rifling with a polished chamber and bore to perform well with lead, plated and jacketed bullets Finish Options: Stainless Steel, Black, Titanium Nitride TiN (Gold) Large œZP Logo machined on the Port Side of the lockup. Made in the USA