This ProMag COLA16B is a detachable 42-round replacement magazine designed for AR-15 and M16 style rifles chambered in .223 Rem / 5.56 NATO. The body and follower are constructed from a DuPont Zytel-based polymer to provide durability while keeping weight low. Springs are formed from heat-treated chrome-silicon wire to support consistent feeding in typical shooting and training applications.
Key Specifications
- The magazine capacity is 42 rounds.
- Compatible with AR-15 / M16 type firearms chambered in .223 Rem / 5.56 NATO.
- The body material is a DuPont Zytel-based polymer.
- The follower is injection molded polymer.
- The spring is made from heat-treated chrome-silicon wire for feeding reliability.
- The exterior finish is black.
- Manufacturer-reported dimensions are 1.85 x 4.80 x 11.05.
- The listed weight is 0.4 (manufacturer data).
- Country of origin is reported as US.
This magazine offers a straightforward, no-nonsense option for users who need extended capacity in an AR-15/M16 platform. The combination of DuPont Zytel-based polymer construction and a heat-treated chrome-silicon spring delivers a balance of durability and reliable feeding for range use, training, or other lawful applications where higher capacity magazines are appropriate.
This description was generated with AI and may contain errors. Verify specifications and legal restrictions with the manufacturer before purchase. Provided “as-is” without warranties or guarantees.
