Amend2 Firearms 556MOD2B1030: The Amend2 10/30 magazine is a sturdy reliable 5.56x45 NATO (.223 Remington) AR15/M4/M16 magazine made of an advanced polymer material that has the body of a 30-round magazine but is riveted to only hold 10-rounds. It is a light durable and excellent alternative to the standard M4/M16 Usgi aluminum magazine. - FEATURES: - 10-round magazine. - Sturdy impact-resistant polymer with textured grip. - Anti-tilt follower. - Heavy-duty non-memory and non-corrosive stainless steel spring. - Made in the U.S.A. - Material able to cerakote.