ProMag Sig Sauer P226 Magazine — 40 S&W / .357 Sig, 20rd

This ProMag magazine is a 20-round replacement for Sig Sauer P226 pistols chambered in 40 S&W and .357 Sig. It is constructed from heat-treated steel and includes polymer components for the follower and base-plate. The magazine uses a chrome-silicon spring that is heat-treated for strength and consistent feeding.

Key Specifications

• Designed for Sig Sauer P226 pistols.
• Compatible with 40 S&W / .357 Sig cartridges.
• Holds 20 rounds for extended capacity over standard magazines.
• Constructed from heat-treated steel for structural durability.
• Features a DuPont Zytel polymer follower and base plate for reliable operation.
• Uses a chrome-silicon wire spring that is heat-treated for strength and consistency.
• Manufactured by ProMag as a replacement/spare magazine option.

Built with durable components and designed to meet routine range and service needs, this magazine offers owners of the Sig Sauer P226 a dependable higher-capacity option. The combination of a steel body, polymer follower and base plate, and a heat-treated chrome-silicon spring focuses on reliable feeding and long-term use in training and duty contexts.