The Zev Technologies™ Extended Magazine Release for Glock® is easy to install and Machined from Billet Aluminum then Hard Anodized. This magazine release is a must for any Glock® owner. Extra length and a larger engagement surface helps you save time on reloads when it matters most. And because it's from Zev, you know it's quality. CNC Aircraft Quality Billet Aluminum. Black Hard Anodize Mag-release body. Textured button face. Black Hard Anodize button or Silver un-anodized button. Drop in replacement. ZEV Parts always incorporate design, feel and performance.