ProMag COL-A16B 42-Round AR-15 Magazine, Black Polymer

This ProMag COL-A16B magazine is a 42-round spare or replacement designed for AR-15 and M16 platforms chambered in .223 Rem / 5.56 NATO. The body is constructed from a DuPont Zytel based polymer and the magazine uses an injection molded follower with a heat-treated chrome-silicon spring for consistent feeding. Made in the USA and intended for extended-capacity applications such as range use and training.

Key Specifications

• The magazine capacity is 42 rounds.
• Compatible with AR-15 / M16 (.223 Rem / 5.56 NATO) platforms.
• The magazine body is made from a DuPont Zytel based polymer.
• The follower is an injection molded magazine follower.
• The magazine spring is formed from heat-treated chrome-silicon wire.
• The finish is black.
• The product is made in the USA.
• The listed overall dimensions are 1.85 x 4.80 x 11.05 (as provided by the manufacturer).
• The listed weight is 0.4 (as provided by the manufacturer).

Durable construction and simplified serviceability make this magazine a practical choice for shooters who need higher capacity for extended sessions at the range or for use in training. The polymer body and corrosion-resistant spring are specified to provide reliable feeding and a long service life under routine use.