This Glock Gen 5 magazine holds 24 rounds of your favorite 9mm ammo. This 24 round magazine has a black polymer finish, orange follower, and a low-profile but classic design. Each and every Glock magazine is constructed with a hardened steel insert that has been encased in high tech polymer to protect the magazine and prevent damage, even when dropped from great heights. Every Glock mag has a high-quality spring and follower to ensure reliable feeding from the first round fed down to the last shot. Other features of the Glock Gen 5 24 round 9mm magazine are the following: Constructed of hardened metal encased in durable polymer. Clear witness holes for each round. Double-stack design to fit more rounds. Beveled Glock Base Plate. Sturdy spring wire internals. This is a Glock OEM magazine.