http://armorydynamics.com/Amend2-30-Round-AR15M4-Magazine-556-x-45--Black_p_50.html

The Amend2 30 round magazine is a sturdy, reliable 5.56x45 NATO (.223 Remington) AR15/M4/M16 magazine made of advanced polymer material. It is a light and durable excellent alternative to the standard 30 round M4/M16 USGI aluminum magazine. Amend2 magazine and floor plate comes in several colors; black, zombie green, ghost white, dark earth and desert sand.

Features

• Sturdy impact resistance polymer with textured grip
• Anti-tilt super follower
• Heavy duty, non-memory, non-corrosive stainless steel spring
• Made in the U.S.A.
• Material able to cerakote