Mec-Gar MGSW5915B 15-Round 9mm Magazine for S&W 5900 Series

The Mec-Gar MGSW5915B delivers reliable feeding and extended capacity for Smith & Wesson 5900 series pistols. This factory-quality magazine eliminates common feeding issues while providing three additional rounds over standard 12-round magazines. Built to original equipment manufacturer specifications, it maintains the same profile and reliability as factory magazines.

What Makes This Different

Mec-Gar manufactures magazines for over 90% of the world's firearms companies, including many "factory" magazines. The MGSW5915B uses heat-treated carbon steel construction with precision-formed feed lips that maintain consistent geometry under stress. Unlike aftermarket alternatives that may cause feeding problems, this magazine undergoes the same quality control processes as original equipment magazines. The blued finish provides corrosion resistance while maintaining the classic appearance of the 5900 series platform.

Key Features

• 15-round capacity increases firepower by 25% over standard magazines
• Heat-treated carbon steel body withstands repeated loading cycles
• Precision-formed feed lips ensure consistent cartridge presentation
• Compatible with S&W models 659, 5900, 910, and 915
• Blued finish matches original factory appearance
• Anti-tilt follower prevents jamming during rapid fire
• Removable floorplate allows easy disassembly for cleaning

Field testing demonstrates consistent feeding with various 9mm ammunition weights from 115 to 147 grains. The magazine functions reliably in competitive shooting environments where rapid reloads are critical. Law enforcement agencies have adopted Mec-Gar magazines for duty use due to their proven reliability under stress. The extended capacity proves advantageous for home defense scenarios where ammunition conservation matters.

Technical Specs

• Capacity: 15 rounds of 9mm Luger
• Material: Heat-treated carbon steel body
• Finish: Traditional blue
• Compatibility: S&W 659, 5900, 910, 915
• Follower: Anti-tilt polymer design
• Spring: Music wire construction
• Country of Origin: Italy
• Weight: Approximately 4.2 ounces loaded

This magazine represents proven engineering from the world's leading magazine manufacturer. The combination of increased capacity and factory-level reliability makes it essential equipment for serious shooters. Professional gunsmiths stock Mec-Gar magazines because they solve problems rather than create them.