The Amend2 AR-15 Mod-A 10-round magazine is compatible with .223 Remington and 5.56x45 NATO cartridges. Constructed from fiberglass-reinforced nylon, this magazine combines modern performance with a proven design. It offers enhanced impact resistance, stiffness, and temperature resistance compared to standard models.Key FeaturesCapacity: Holds 10 rounds, designed for optimal feeding.Material: Made from fiberglass-reinforced nylon for durability and reliability.Enhanced Grip Pattern: Improved texture for positive control in various conditions.Unique Feed Lips Geometry: Promotes reliable round presentation and faster cycling.Stainless-Steel Spring: Heat-treated for consistent performance and longevity.