Sig Sauer P320 40 S&W 4.7″ Nitride Barrel

This replacement barrel is intended for Sig Sauer P320/P250 full-size pistols and is chambered in .40 S&W (.40 Auto). The barrel measures 4.7 inches and is finished in black nitride on steel for improved surface hardness and corrosion resistance. It is supplied non-threaded and does not include a loaded-chamber indicator (LCI). The barrel will also fit .357 SIG in P320/P250 full-size frames without additional parts.

Key Specifications

• The barrel is chambered for .40 S&W (.40 Auto).
• The barrel length measures 4.7 inches.
• The finish is black nitride.
• The barrel material is steel.
• Compatible with Sig P320/P250 full-size pistols.
• Also fits .357 SIG in P320/P250 full-size without additional parts.
• The barrel is supplied non-threaded.
• The model designation is P320.

Engineered to match factory dimensions and fitment, this 4.7″ nitride barrel offers a durable, low-maintenance option for replacing a worn barrel or returning a pistol to serviceable condition. Its black nitride surface and full-size compatibility make it a practical choice for shooters who value reliable, OEM-compatible components.