ProMag COLA1 AR-15 .223/5.56 30rd Black Oxide Steel Magazine

The ProMag COLA1 is a standard-capacity 30-round detachable magazine built for the AR-15 platform chambered in .223 Remington and 5.56x45mm NATO. Designed as a reliable replacement or spare for duty, training, and range use, this magazine ships ready to feed and is made in the USA.

The magazine body is constructed from heat-treated steel with a protective black oxide (blued) finish to resist corrosion and wear through extended shooting sessions. Inside, an injection-molded follower pairs with a chrome-silicon wire spring to deliver consistent, smooth feeding round after round. At 30 rounds, this is the standard capacity most shooters reach for when running AR-15 rifles and carbines in .223 Rem or 5.56 NATO.