Rigid metal tube foundation
Trademark, high-tech polymer jacket
Hardened steel insert
The foundation of the factory original Glock 42 Pistol Magazine is a rigid metal tube encased in a jacket made from the company's trademark, high-tech polymer. The polymer gives the magazine an edge of indestructibility. A hardened steel insert hides within the magazine. This magazine is designed to withstand drops from heights and extreme environmental exposure. Equipped with a polymer flat base.