The ProMag SMIA11 extends capacity for Smith & Wesson M&P pistols chambered in .40 S&W, delivering 15 rounds of reliable feeding in a factory-compatible profile. This aftermarket magazine provides additional firepower while maintaining the familiar ergonomics and handling characteristics of standard M&P magazines.
What Makes This Different
Unlike standard capacity magazines, the SMIA11 maximizes ammunition capacity within legal limits for most jurisdictions. The blued steel construction offers enhanced durability compared to polymer alternatives, while the precision-formed body ensures consistent cartridge alignment. ProMag engineers this magazine to function with existing M&P holsters and magazine pouches without modification.Key Features
- 15-round capacity for .40 S&W cartridges in S&W M&P pistols
- Blued steel construction resists corrosion and impact damage
- Heat-treated steel spring maintains consistent tension over extended use
- Factory-profile dimensions fit standard M&P magazine wells
- Anti-tilt follower design prevents feeding malfunctions
- Removable floorplate allows complete disassembly for maintenance
- Compatible with existing M&P holsters and magazine carriers
Technical Specs
- Capacity: 15 rounds
- Caliber: .40 Smith & Wesson
- Compatibility: Smith & Wesson M&P series pistols
- Construction: Blued carbon steel body
- Spring: Heat-treated steel coil spring
- Follower: High-impact polymer with anti-tilt design
- Overall length: Approximately 5.2 inches
- Weight: 4.1 ounces (empty)
- Finish: Traditional blued steel
