The GLOCK MF00285 Durable Polymer Magazine is engineered for optimal performance and reliability. Its innovative design features a hardened steel insert surrounded by advanced polymer, offering unparalleled protection against impacts and deformations. This magazine guarantees dependable feeding with its high-quality spring and follower, ensuring every round fires smoothly from the first to the last shot. Constructed of Hardened Metal Encased in Durable Polymer Viewing Windows for quick ammunition checks Polymer Base Plate for enhanced durability Trust GLOCK for the reliability you need in critical situations.