ProMag COL22 StandardBlued Flush Fit Detachable 10rd 223 Rem, 5.56x45mm NATO for AR-15

The ProMag COL22 is a 10-round flush-fit magazine built for AR-15 rifles chambered in .223 Remington or 5.56x45mm NATO. If you're running a modern piston gun, a retro-profile build, or just prefer magazines that don't extend beyond the magwell, this steel-bodied option delivers reliable capacity without the extra length. ProMag engineered this magazine with heat-treated steel and a hard black oxide finish—the kind of no-nonsense construction that holds up to repeated range sessions and field use.

Flush-fit mags offer a practical advantage for shooters who prioritize a compact profile. Whether you're working through drills on the line, running a tighter gun for truck or pack duty, or building an AR that doesn't advertise its ammunition capacity, the COL22 keeps things squared away. The heat-treated steel body resists deformation, and the oxide finish protects against rust and wear in less-than-ideal conditions.

This is a straightforward, American-made magazine designed to cycle .223 and 5.56 ammunition reliably without the complexity or premium price tag of other brands. If you shoot an AR-15 and want a dependable 10-round option that stays flush with your lower receiver, the ProMag COL22 belongs in your magazine rotation.

Key Features

• 10-round capacity for .223 Rem/5.56x45mm NATO AR-15 rifles
• Flush-fit design—does not extend beyond the magwell
• Heat-treated steel body for durability and deformation resistance
• Black oxide finish protects against rust and corrosion in the field
• Reliable feed geometry for modern and retro-profile builds

Specifications

Frequently Asked Questions

Will this magazine fit my AR-15?

Yes—the COL22 is designed for any AR-15 chambered in .223 Remington or 5.56x45mm NATO. It feeds both cartridges reliably.

What does "flush-fit" mean?

A flush-fit magazine sits flush with the bottom of your lower receiver and does not extend beyond the magwell. This keeps your overall profile compact and is preferred for retro builds, short-range work, or when you want a streamlined gun.

Is the black oxide finish durable enough for field use?

Yes. The black oxide finish is applied to heat-treated steel, which resists corrosion and wear during repeated use and exposure to the elements. It's designed to hold up in harsh conditions.

What ammunition does this magazine feed?

The COL22 is loaded with .223 Remington or 5.56x45mm NATO ammunition. Both cartridges feed through this magazine reliably.