The uch21 upper charging handle for all generations of the glock 20, 21, 30,40,41 is the easiest way to charge your glock without needing to modify your pistol.Installation is simple and can be mounted to your glock in under 2 minutes with the supplied hardware and tool.Comes with one high profile charging handle top, one low profile charging handle top, and one base.Model: Upper Charging HandleMaterial: Polymer