ProMag SMIAI 15rd 9mm Magazine S&W 5900/910/915/459 Blued Steel

The ProMag SMIAI Standard magazine delivers reliable feeding and extended capacity for Smith & Wesson 5900 series pistols. This 15-round double-stack magazine provides shooters with additional firepower while maintaining the proven geometry of factory specifications.

What Makes This Different

Constructed from heat-treated blued steel rather than polymer alternatives, this magazine offers enhanced durability under heavy use conditions. The double-stack configuration maximizes capacity within the standard grip frame dimensions of S&W 5900 series pistols. ProMag's manufacturing process includes precision forming and heat treatment to ensure consistent feeding geometry and spring tension retention over thousands of loading cycles.

Key Features

• 15-round capacity increases firepower by 25% over standard 12-round magazines
• Heat-treated blued steel construction resists deformation and corrosion
• Double-stack design fits flush in S&W 5900, 910, 915, and 459 pistol frames
• Chrome silicon spring maintains consistent tension through repeated loading cycles
• Anti-tilt follower design prevents feeding malfunctions and jamming
• Steel magazine body withstands impact and compression better than polymer alternatives
• Removable floor plate allows for cleaning and maintenance access

Field performance shows reliable cycling with various 9mm Luger ammunition weights from 115 to 147 grains. The magazine functions effectively in competitive shooting scenarios where rapid reloads are essential, as well as duty applications requiring dependable feeding under stress. The blued steel finish provides corrosion resistance in humid environments while maintaining a professional appearance that matches factory components.

Technical Specs

• Capacity: 15 rounds
• Caliber: 9mm Luger
• Material: Heat-treated blued steel body
• Spring: Chrome silicon wire
• Compatibility: S&W Models 5900, 910, 915, 459
• Overall length: Approximately 5.2 inches
• Weight: 4.2 ounces empty
• Country of origin: USA

This magazine represents a cost-effective capacity upgrade for Smith & Wesson 5900 series owners seeking additional rounds without grip extension. The steel construction ensures longevity that justifies the investment for serious shooters who demand consistent performance.