ProMag SHDA4 Shadow Systems CP920 9mm Magazine - Blued Steel

The ProMag SHDA4 delivers reliable feeding and enhanced capacity for Shadow Systems CP920 pistols. This aftermarket magazine combines robust blued steel construction with proven spring technology to extend shooting sessions and reduce reload frequency.

What Makes This Different

Unlike factory magazines limited to standard capacity, the SHDA4 provides extended round count in a durable steel body. The blued finish resists corrosion better than polymer alternatives while maintaining the precise tolerances required for consistent feeding. Heat-treated steel construction withstands repeated compression cycles that can fatigue lesser materials over thousands of rounds.

Key Features

• Blued steel body construction for maximum durability and corrosion resistance
• Engineered specifically for Shadow Systems CP920 9mm pistols
• High-tensile spring system maintains consistent feeding pressure
• Anti-tilt follower design prevents jams and double-feeds
• Witness holes allow quick visual round count verification
• Drop-free design ensures reliable tactical reloads
• Compatible with standard magazine pouches and carriers

Range testing demonstrates consistent cycling through various 9mm loads from 115-grain FMJ to 147-grain hollow points. The steel construction handles +P ammunition without deformation, making it suitable for duty use, competition shooting, and personal defense applications. The magazine functions reliably in temperatures from -10°F to 140°F, maintaining spring tension and feeding reliability across environmental extremes.

Technical Specs

• Caliber: 9mm Luger/9x19mm Parabellum
• Compatibility: Shadow Systems CP920 pistols
• Body Material: Heat-treated blued steel
• Spring: High-carbon steel with anti-fatigue coating
• Follower: Self-lubricating polymer with anti-tilt design
• Base Plate: Steel with textured grip surface
• Manufacturer: ProMag Industries
• Country of Origin: USA

ProMag backs this magazine with their standard warranty against manufacturing defects. The SHDA4 represents a cost-effective capacity upgrade that maintains the reliability standards demanded by serious shooters.