ProMag SMIA17 25-Round Magazine 40 S&W S&W SD Series Blued Steel

The ProMag SMIA17 extends capacity for Smith & Wesson SD series pistols chambered in 40 S&W, delivering 25 rounds of reliable feeding in a robust steel construction. This extended magazine transforms standard capacity firearms into higher-volume platforms for competitive shooting, training, and extended range sessions.

What Makes This Different

Unlike polymer alternatives, the SMIA17 features blued steel construction that withstands repeated loading cycles and harsh conditions. The magazine body maintains consistent spring tension across all 25 rounds, ensuring reliable feeding from first shot to last. Heat-treated steel components resist deformation under stress, while the precision-formed feed lips maintain proper cartridge presentation to the chamber.

Key Features

• 25-round capacity increases firepower for 40 S&W chambered firearms
• Blued steel construction provides superior durability over polymer designs
• Compatible with Smith & Wesson SD series pistols (excludes VE variants)
• Heat-treated steel body resists deformation and wear
• Precision-formed feed lips ensure consistent cartridge presentation
• High-tensile spring maintains reliable feeding pressure
• Drop-free design allows rapid magazine changes

Field testing demonstrates consistent feeding across various 40 S&W loads, from standard pressure target rounds to high-performance defensive ammunition. The extended capacity proves valuable for competitive disciplines requiring volume fire, while the steel construction handles the increased stress of rapid magazine changes. Weather resistance testing shows the blued finish maintains corrosion protection in humid environments typical of outdoor ranges and training facilities.

Technical Specs

• Capacity: 25 rounds
• Caliber: 40 Smith & Wesson
• Construction: Blued carbon steel
• Compatibility: S&W SD series (except VE variants)
• Finish: Traditional bluing for corrosion resistance
• Spring: High-carbon steel with anti-fatigue treatment
• Base plate: Steel with finger extension
• Country of Origin: USA

Professional shooters recognize the value of reliable extended capacity when training demands exceed standard magazine limits. The SMIA17 delivers proven steel magazine technology in a format that maximizes ammunition capacity without compromising feeding reliability.