Amend2 Firearms AM556MOD2B1520: The Amend 15/20 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 20-round magazine but nly holds 15-rounds for states with capacity restrictions. It is a light durable and excellent alternative to the standard M4/M16 Usgi aluminum magazine. The 20-round body profile is ideal for added maneuverability and weapon handling. - Features: - 15-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.