ProMag DRMA24 Standard 65rd Drum w/ Capacity Window 223 Rem/5.56x45mm Fits AR-15 Black DuPont Zytel Polymer

This drum replacement or spare magazine is compatible with your AR-15. It is constructed of DuPont Zytel polymer with injection molded mag follower and mag spring formed from chrome silicone wire. Made in the USA.