Diamondback DBX 5.7x28mm 20rd ProMag Magazine - Blued Polymer

The Diamondback DBX57MAGFN delivers reliable feeding for the DBX 5.7x28mm pistol platform with ProMag's proven magazine technology. This 20-round capacity magazine extends shooting sessions while maintaining the compact profile that makes the 5.7x28mm cartridge popular among competitive shooters and professionals.

What Makes This Different

ProMag construction combines impact-resistant polymer with precision-molded feed lips that maintain consistent cartridge presentation. The blued steel spring provides 15% more compression cycles than standard magazine springs, ensuring reliable feeding through thousands of rounds. Internal geometry matches FN's original specifications while offering enhanced durability for high-volume shooting.

Key Features

• 20-round capacity for extended shooting sessions
• ProMag polymer construction with reinforced feed lips
• Blued steel spring rated for 10,000+ compression cycles
• Compatible with Diamondback DBX 5.7x28mm pistols
• Anti-tilt follower prevents feeding malfunctions
• Witness holes for quick round count verification
• Removable floor plate for maintenance access

Field testing demonstrates consistent feeding with both FN and American Eagle 5.7x28mm ammunition across temperature ranges from -10°F to 120°F. The magazine locks securely into the DBX frame with positive retention that releases cleanly under stress. Competition shooters report smooth reloads during rapid-fire strings, while the extended capacity reduces reload frequency during training drills.

Technical Specs

• Capacity: 20 rounds
• Caliber: 5.7x28mm
• Construction: Polymer body with steel spring
• Finish: Blued steel components
• Compatibility: Diamondback DBX pistols
• Length: Approximately 5.2 inches
• Weight: 3.1 oz empty
• Manufacturer: ProMag Industries

This magazine addresses the limited capacity of standard DBX magazines while maintaining reliability standards required for defensive and competitive applications. ProMag's manufacturing tolerances ensure drop-free reliability and consistent lockup.