The Amend2 M81 Camo 30 round magazine is a sturdy, reliable 5.56x45 NATO (.223 Remington) AR15 magazines made of advance polymer material. Sturdy Impact resistance polymer with textured grip Anti-tilt super follower Heavy duty, non-memory, and non-corrosive stainless steel spring Made in the U.S.A. Material able to Cerakote Product Features 30-round magazine. 5.56/.223 compatibility. Sturdy, impact-resistant polymer with textured grip. 4 way anti-tilt, self-lubricating follower. Heavy-duty, non-memory, and non-corrosive stainless steel spring. Made in the U.S.A. Material able to cerakote and laser. Product Specifications Manufacturer: Amend2 Model: AR15 / M4 / M16 Caliber: 5.56 NATO Magazine Capacity: 30 Rounds