Sig Sauer P320 4.7 in 9mm Replacement Barrel

This factory replacement barrel is designed for Sig Sauer P320 full-size models. It measures 4.7 inches and is chambered for 9mm Luger. The barrel is non-threaded and intended as a direct-fit factory component for compatible P320 slides and frames. Note: only compatible with non-loaded chamber indicator (LCI) slides and pistols; not compatible with X5-length pistols.

Key Specifications

• This is a factory replacement barrel identified by part number 8900791.
• The barrel length measures 4.7 inches for full-size P320 installations.
• The cartridge is specified as 9mm Luger.
• Designed to fit P320 full-size (P320FS) models.
• The barrel style is listed as non-threaded.
• The product is made by Sig Sauer.
• Compatibility is limited to slides and pistols without a loaded chamber indicator (non-LCI).
• This barrel is not compatible with X5-length pistols.

Engineered for direct factory fit and function in compatible P320 full-size pistols, this 4.7-inch replacement barrel provides a straightforward option for maintenance or part refresh. Its full-size form factor and non-threaded configuration make it suitable for owners seeking a like-for-like barrel swap where LCI compatibility is required and X5-length pistols are excluded.