ProMag COL08 10-Round AR-15 Magazine 223/5.56 Blued Steel

The ProMag COL08 Standard delivers reliable feeding in a compact 10-round configuration for AR-15 platforms chambered in 223 Remington and 5.56 NATO. This blued steel magazine addresses compliance requirements while maintaining the dependable function expected from ProMag's proven design.

What Makes This Different

The COL08 features heat-treated steel construction with a traditional blued finish that resists corrosion better than standard phosphate coatings. The 10-round capacity meets restricted state requirements without compromising the magazine's structural integrity or feeding reliability. Internal geometry mirrors mil-spec dimensions to ensure consistent cartridge presentation and bolt lockback function.

Key Features

• 10-round capacity complies with restricted state regulations
• Heat-treated steel body with corrosion-resistant blued finish
• Compatible with all mil-spec AR-15 lower receivers
• Anti-tilt follower prevents feeding malfunctions
• Removable floorplate for easy cleaning and maintenance
• Standard USGI magazine catch engagement
• Chrome silicon spring maintains consistent tension

Field testing demonstrates reliable cycling across various ammunition weights from 55-grain to 77-grain projectiles. The steel construction withstands repeated loading cycles and drop impacts that can damage polymer alternatives. Competition shooters appreciate the positive seating and consistent lockback function, while the reduced capacity suits precision shooting applications where frequent reloading is acceptable.

Technical Specs

• Capacity: 10 rounds
• Caliber: 223 Remington/5.56x45mm NATO
• Material: Heat-treated steel with blued finish
• Overall length: Approximately 7.1 inches
• Weight: 4.2 ounces (empty)
• Compatibility: AR-15 platform rifles and pistols
• Follower: Anti-tilt design
• Spring: Chrome silicon steel
• Country of origin: USA

The COL08 Standard represents a practical solution for shooters requiring capacity-restricted magazines without sacrificing build quality. ProMag's established manufacturing standards ensure this magazine integrates seamlessly with existing AR-15 systems while meeting legal compliance needs.