The ProMag COLA18B is a detachable 30-round magazine for AR-15 and M16 rifles and carbines. It is designed for .223 Rem/5.56 NATO cartridges and uses a black DuPont Zytel polymer body with an injection-molded follower. The magazine spring is formed from heat-treated chrome-silicon wire, and the product is made in the USA.

Key Specifications

• The magazine has a capacity of 30 rounds.
• It is designed for .223 Rem/5.56 NATO cartridges.
• The magazine fits AR-15 and M16 platforms.
• Its product type is detachable.
• The body is constructed from DuPont Zytel polymer.
• The finish is black.
• The follower is injection molded.
• The spring uses heat-treated chrome-silicon wire.
• The country of origin is the United States.

With its practical capacity, polymer construction, and platform-specific design, the COLA18B is a straightforward spare or replacement magazine for range sessions, training, and general equipment organization.