ProMag builds this magazine (part no. COL21) as a flush-fit replacement or spare for AR-15 pattern rifles, chambered in .223 Remington/5.56x45mm NATO. The reduced 5-round capacity sits flush with the magazine well, making it a compact, low-profile option for hunting seasons or states with magazine capacity limits. The body is heat-treated steel finished in blue, with an injection-molded follower and a chrome silicone wire spring, and it’s assembled in the USA. For ProMag owners who want the lowest-profile AR-15 magazine option, this AR magazine fits the bill.

Key Specifications

• Chambered in .223 Remington/5.56x45mm NATO.
• Holds 5 rounds, sitting flush with the magazine well.
• Fits the AR-15 platform.
• Built from heat-treated steel, finished in blue.
• Uses an injection-molded follower and a chrome silicone wire spring.
• Assembled in the USA.
• A compact, low-profile option for hunting seasons or capacity-restricted states.
• Carries the manufacturer’s Standard model designation.
• Built for the AR-15 Platform.
• Classified by the manufacturer as Flush Fit.

Frequently Asked Questions

Why choose a 5-round flush-fit magazine? It sits flush with the magazine well for a compact, low-profile rifle, useful for hunting or capacity-restricted states.

What rifles does it fit? AR-15 pattern rifles chambered in .223 Remington/5.56x45mm NATO.

Buy the ProMag AR-15 5-Round Flush-Fit Magazine

A compact, low-profile spare, this ProMag flush-fit magazine is a practical option for hunting or restricted-capacity use. Order it from our Lubbock, Texas gun shop for fast, insured shipping.