ProMag COL-A4 20rd Steel AR-15 Magazine .223/5.56

This ProMag COL-A4 is a 20-round detachable magazine designed for AR-15 pattern rifles chambered in .223/.5.56x45. The body is made from heat-treated steel with a black oxide finish for corrosion resistance, and the internals use a precision-molded follower and treated spring intended to support reliable feeding. The magazine is produced in the U.S.A. and intended as a direct-fit spare or replacement for compatible AR-15 platforms.

Key Specifications

• The magazine holds 20 rounds for standard AR-15 load configuration.
• The caliber compatibility is .223 REM/5.56 NATO.
• The construction material is Steel.
• The external finish is listed as Oxide.
• The magazine is designed to fit the AR-15 Platform.
• Internal feed component is an injection molded mag follower for consistent feeding.
• The spring is a chrome-silicon wire spring formed for durability and tension control.
• The model designation is Standard.
• The product type is Detachable.
• Manufactured location: Made in the U.S.A.

Solidly built and straightforward in design, the COL-A4 provides a durable, no-nonsense magazine option for range, training, and practical shooting applications. Its heat-treated steel body and corrosion-resistant finish pair with proven internal components to offer consistent feeding and dependable service as a spare or replacement magazine for AR-15 owners.