Samson 040603201 S&W M&P Shield 9mm Magazine Extension +1 Round

The Samson 040603201 Magazine Extension transforms standard S&W M&P Shield magazines into higher-capacity units without compromising concealability. This precision-machined extension adds one round to both 7 and 8-round 9mm magazines while maintaining the pistol's slim profile for everyday carry.

What Makes This Different

Unlike polymer extensions that can crack under stress, this unit features aerospace-grade 6061-T6 aluminum construction with Type III hardcoat anodizing. The material choice provides exceptional durability while adding minimal weight to the magazine. The precise machining ensures consistent feeding and eliminates the feeding issues common with cheaper alternatives.

Key Features

• Increases capacity by one round on 7 and 8-round M&P Shield magazines
• 6061-T6 aluminum construction for maximum strength-to-weight ratio
• Type III hardcoat anodized finish resists wear and corrosion
• Compatible with both original M&P Shield and M2.0 models
• Maintains magazine's original width for holster compatibility
• CNC-machined for precise tolerances and reliable function
• No modification required to existing magazines

The aluminum construction handles repeated loading cycles and magazine drops without deformation. Competition shooters appreciate the additional round capacity during stages, while concealed carry users benefit from extra ammunition without changing holsters. The hardcoat anodizing provides a matte black finish that resists scratches from daily carry and maintains its appearance through thousands of loading cycles.

Technical Specs

• Material: 6061-T6 aluminum alloy
• Finish: Type III hardcoat anodized black
• Compatibility: S&W M&P Shield and M2.0 9mm magazines
• Capacity increase: +1 round (7rd becomes 8rd, 8rd becomes 9rd)
• Magazine compatibility: 7 and 8-round factory magazines
• Installation: Drop-in replacement for factory baseplate
• Country of origin: United States

This extension delivers the capacity increase serious shooters demand while maintaining the reliability standards required for defensive use. The combination of premium materials and precise manufacturing ensures consistent performance when it matters most.