Description Year after year, ProMag has increasingly become one of the leading manufacturers of firearms magazines in the world. Gun enthusiasts and law enforcement personnel have agreed, be it for recreational "plinking," competition shooting or law enforcement, ProMag is the source you can count on. This ProMag AR drum magazine holds 65 rounds of .223 Remington or 5.56 NATO ammunition, providing serious firepower for your AR-15 platform firearms. It is constructed of a high-impact Dupont-Zytel based polymer with an overmolded steel feed-lip insert for added strength. ProMag magazines include a lifetime guarantee, if you ever have a problem with their magazines, simply return them to ProMag for replacement.PRODUCT DETAILManufacturer Number: DRM-A9 Caliber: .223 Remington/5.56 NATO Capacity: 65 Rounds Material: Polymer and Steel Color: Black