About the Mas Defense Glock 17

This product is a slide parts kit designed for Glock 17 pistols from Generation 1 to Generation 3. It includes the internal components necessary to assemble or repair a slide, typically excluding the barrel, recoil spring assembly, and the slide itself. These kits are used by gunsmiths, armorers, and individual owners for maintenance, repair, or custom builds of Glock 17 firearms within the specified generations.