This is a factory 6-round magazine for Glock 42 pistols The Glock 42 is one of the most reliable .380 pistols on the market today so don t compromise when it comes to the factory magazines. Built from durable polymer with tough steel inserts, Glock s factory magazines are known for their reliability in even the most extreme conditions These 6-round standard magazines feature a flush-fitting baseplate and numbered witness holes for keeping track of capacity. They re engineered for optimum fit & function, and designed to drop free when released. ONLY fits Glock 42 pistols. Glock magazines come with a very strong spring rate from the factory to ensure reliability in the toughest of conditions. Sometimes, magazines are found to be a little bit difficult to load at first. However, after a few times loading and unloading, the springs break in nicely and it becomes much easier to load. We recommend using a magazine loader to ease the loading process. For added strength and durability factory Glock magazines are steel lined on the interior with a crack resistant polymer body. This increased durability gives officers, military members, and dedicated citizens the confidence that there will be no issues under heavy training. Product Features Factory Magazine Black Finish Polymer with Steel Insert Polymer Base Pad Product Specifications Manufacturer: Glock Model: 42 Caliber: .380 ACP Magazine Capacity: 6-Round Additional Features: Black Finish,