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

The ProMag COL-A4 is a 20-round detachable magazine designed for use with AR-15 platform rifles chambered in .223 Rem/5.56x45mm. The body is constructed from heat-treated steel for durability under repeated use. A precision-molded polymer follower and a chrome-silicon wire spring are specified to help ensure consistent feeding. The magazine is manufactured in the United States.

Key Specifications

• The magazine holds 20 rounds.
• Chambering listed as .223 Rem/5.56x45mm.
• Compatible with the AR-15 platform.
• Constructed from heat-treated steel.
• Features an injection-molded polymer follower.
• Uses a chrome-silicon wire spring.
• Designed as a detachable magazine.
• Manufactured in the United States.

Simple, rugged, and purpose-built, this ProMag 20-round magazine provides a dependable spare or replacement for range use, training, and general AR-15 ownership needs. Its steel construction and established internal components prioritize durability and straightforward function for shooters who value proven, no-nonsense gear.