The Zev Tech Speed feed magwell has a glock specific shape and geometry. This is not a design from another platform that has been adapted to the Glock. Improved fit, function and angle. Avialable in Black Crinkle Powder coat that is both attractive, and durable (60 rockwell) or a bright polished silver aluminum. Designed for use with magazines with extended basepad such as the Arredondo +5 basepad.