The ProMag COL-A4 is a 20-round detachable magazine engineered for AR-15 platform rifles chambered in .223 Rem/5.56 NATO. Its body is constructed from heat-treated steel with a black oxide finish to resist wear under regular use. A chrome-silicon wire spring and a precision-molded polymer follower provide consistent feeding and functional reliability.
Key Specifications
- The magazine capacity is 20 rounds.
- Chambering compatibility is .223 Rem / 5.56 NATO.
- The magazine body material is heat-treated steel.
- The finish on the magazine is a black oxide coating.
- The spring is made from chrome-silicon wire for durability.
- The follower is a precision-molded polymer design for reliable feeding.
- Designed to fit the AR-15 platform.
- The product type is a detachable magazine.
- The model designation is COL-A4 (Standard).
- Manufactured in the United States.
Durable and straightforward, the ProMag COL-A4 provides a practical spare or replacement magazine for range, training, and duty-use scenarios where dependable feeding and rugged construction matter. Its steel construction and proven spring-and-follower combination deliver a balance of longevity and consistent performance for responsible AR-15 owners looking to maintain readiness in routine use.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.




