Product DescriptionUpgrade your Sig Sauer P320 Compact with the Backup Tactical threaded drop-in replacement barrel, built for reliable performance and long-term durability. This barrel is designed to fit the standard P320 Compact that uses the 3.9-inch factory barrel (not the P320 X-Series Compact with the discontinued 3.6-inch factory barrel). Constructed from AISI 416 stainless steel and finished in black nitride, it features 1/2x28 muzzle threads for easy use with compatible muzzle devices such as compensators or suppressors. Rifled with a 1:16 twist rate (pulled-broach rifling) for consistent accuracy, this barrel is also cut for a loaded chamber indicator (LCI) and is intended to drop into P320 Compacts with or without LCI.Product HighlightsDrop-in threaded replacement barrel for the Sig Sauer P320 Compact (3.9-inch factory barrel models)1/2x28 threaded muzzle for common 9mm muzzle devices (thread protector included per supplier listing)Durable AISI 416 stainless steel construction with black nitride finish1:16 twist rate with pulled-broach rifling for dependable accuracyLCI cut; designed to work in P320 Compacts with or without loaded chamber indicatorSpecsBrand: Backup TacticalManufacturer Part Number: S320TB-BLKUPC: 686696690338Compatibility/Fit: Sig Sauer P320 Compact (standard 3.9" factory barrel models; not P320 X-Series Compact 3.6")Caliber: 9mm (9mm Luger / 9x19) (per supplier listing)Muzzle Threads: 1/2x28Material: AISI 416 stainless steelRifling: Pulled-broach rifling (per supplier listing)Twist Rate: 1:16Finish/Color: Black (nitride finish per supplier listing)Included: Thread protector (per supplier listing)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 products manufacturer.