ProMag SMIA22 20-Round 10mm Magazine for S&W M&P - Blued Steel

The ProMag SMIA22 extends your Smith & Wesson M&P 10mm capacity to 20 rounds, delivering reliable feeding and enhanced firepower for competitive shooting and tactical applications. This blued steel magazine construction provides durability that outlasts polymer alternatives while maintaining the precise tolerances required for consistent chambering.

What Makes This Different

Unlike standard capacity magazines, the SMIA22 doubles your round count without compromising reliability or adding excessive bulk. The blued steel construction resists corrosion better than bare metal alternatives while providing the structural integrity needed for high-pressure 10mm cartridges. Heat-treated steel components maintain spring tension longer than budget magazines, ensuring consistent feeding through thousands of rounds.

Key Features

• 20-round capacity for extended range sessions and tactical scenarios
• Blued steel construction with corrosion-resistant finish
• Heat-treated internal spring maintains tension under heavy use
• Compatible with all Smith & Wesson M&P 10mm pistol models
• Anti-tilt follower design prevents feeding malfunctions
• Removable floorplate for easy cleaning and maintenance
• Witness holes for quick round count verification

Field testing demonstrates consistent cycling with various 10mm loads, from 180-grain target rounds to full-power hunting ammunition. The extended capacity proves valuable in competitive shooting disciplines where reload speed matters, while the reliable feeding makes it suitable for duty applications. The blued finish resists fingerprints and maintains its appearance through regular handling and holster wear.

Technical Specs

• Capacity: 20 rounds of 10mm Auto
• Construction: Heat-treated blued steel body
• Compatibility: Smith & Wesson M&P 10mm pistols
• Follower: Anti-tilt polymer design
• Spring: Music wire construction
• Floorplate: Removable for maintenance
• Finish: Corrosion-resistant blue
• Country of Origin: USA

ProMag's manufacturing standards ensure drop-free reliability and consistent lockback function. The SMIA22 represents a practical capacity upgrade that maintains the M&P platform's inherent reliability while extending tactical capabilities.