The UCH21 Upper Charging Handle compatible with 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. Compatible with Glock 20/21/30/40/41.