Reliable 42-round magazine for AR-15 rifles in .223/5.56mm. Built from DuPont Zytel polymer with heat-treated chrome-silicon spring and injection-molded follower. Made in the USA with lifetime warranty.
This 42-round magazine is engineered for AR-15 and M16 rifles chambered in .223 Remington or 5.56 NATO. It represents the kind of straightforward, no-nonsense design that serious shooters depend on.
Polymer Body: The magazine is constructed from DuPont Zytel polymer, a material selected for its durability and reliability in demanding conditions.
Spring and Follower: The magazine spring is precision-wound from heat-treated chrome-silicon wire, ensuring consistent feeding and long service life. The injection-molded follower is engineered to work seamlessly with the spring and magazine body.
ProMag backs this magazine with a lifetime warranty against manufacturer defects. Each magazine undergoes rigorous quality control throughout the assembly process—checked and double-checked at every step to ensure consistent performance.
This magazine is manufactured in the United States, supporting domestic production standards and quality control.
Whether you need a spare magazine for your AR-15 or a replacement for your existing setup, this 42-round capacity provides extended shooting sessions with fewer magazine changes. The polymer construction keeps weight minimal while maintaining the strength needed for reliable operation.