The ProMag SMIA26 extends the capacity of Smith & Wesson M&P Shield EZ pistols to 12 rounds of 9mm ammunition, providing significant firepower advantages over factory magazines. This extended magazine transforms the compact pistol into a more capable defensive platform while maintaining reliable feeding and ejection.
What Makes This Different
The SMIA26 delivers 50% more capacity than standard 8-round factory magazines through precision engineering and optimized spring tension. The blued steel construction provides superior durability compared to polymer alternatives, resisting deformation under repeated loading cycles. Heat-treated steel components maintain consistent spring pressure through thousands of loading cycles, ensuring reliable chambering even with varied ammunition weights.
Key Features
- 12-round capacity increases ammunition supply by 4 rounds over factory magazines
- Blued carbon steel construction withstands repeated use and environmental exposure
- Heat-treated magazine spring maintains consistent tension through extended use
- Drop-free design enables rapid reloading during defensive encounters
- Compatible with all S&W M&P Shield EZ 9mm variants
- Extended baseplate provides improved grip purchase during reloading
- Witness holes allow quick visual ammunition count verification
Range testing demonstrates consistent feeding with various 9mm loads from 115-grain to 147-grain projectiles. The extended capacity proves valuable for competitive shooting disciplines requiring higher round counts, while the additional ammunition supply enhances home defense capabilities. The steel construction maintains dimensional stability in temperature extremes from -20°F to 140°F, ensuring reliable function across diverse environmental conditions.
Technical Specs
- Capacity: 12 rounds of 9mm Luger ammunition
- Material: Carbon steel body with blued finish
- Compatibility: S&W M&P Shield EZ 9mm pistols
- Overall length: Approximately 5.2 inches
- Spring: Heat-treated steel with anti-tilt follower
- Baseplate: Extended polymer with textured grip surface
- Country of origin: United States
The SMIA26 represents a practical capacity upgrade for Shield EZ owners seeking enhanced ammunition supply without compromising reliability. ProMag's established manufacturing standards ensure consistent quality control across production runs, making this an intelligent choice for shooters requiring dependable extended capacity.