Product Description The Grey Ghost Precision P320 Full Size Match Grade Drop-In Barrel is built for shooters who refuse to compromise on accuracy, reliability, or value. Machined from 416R gun barrel quality stainless steel and finished in a tough Black Nitride coating, this barrel is engineered as a seamless drop-in upgrade for the Sig Sauer P320 Full Size pistol. Grey Ghost Precision holds final dimensions to within +/- 0.003" to ensure consistent, repeatable accuracy shot after shot. With SAAMI spec 9mm match chambers and a 1:10 twist rate, this barrel delivers the enhanced performance demanded by competitive shooters and serious enthusiasts alike. Grey Ghost Precision&';s team of military and manufacturing professionals designed this barrel around three core principles: accuracy, reliability, and attainability. Product Highlights Precision-machined from 416R gun barrel quality stainless steel for exceptional durability and corrosion resistance Match Grade drop-in design for a direct, hassle-free fit in the Sig Sauer P320 Full Size platform Final dimensions held to +/- 0.003" tolerance for consistent, match-grade accuracy SAAMI spec 9mm match chambers ensure reliable feeding and optimal ballistic performance 1:10 twist rate and Black Nitride finish provide enhanced longevity and surface hardness Specs Brand: Grey Ghost Precision MPN: BARREL-P320F-NT-BN UPC: 850013536160 Caliber: 9mm Material: 416R Gun Barrel Quality Stainless Steel Finish: Black Nitride Twist Rate: 1:10 Compatible Platform: Sig Sauer P320 Full Size Type: Match Grade Drop-In Barrel Dimensional Tolerance: +/- 0.003" Chamber Spec: SAAMI Spec 9mm Match Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.