The UCH21 upper charging Handle offers a hassle-free method to charge your Glock 20, 21, 30, and 40, regardless of the generation. It ensures convenient Glock charging without requiring any pistol modifications (please note: compatible with OEM Glock slides exclusively). Setting it up is a breeze, taking less than 2 minutes to attach to your Glock using the provided hardware and tool. The package includes a high-profile charging Handle top, a low-profile charging Handle top, and a base for comprehensive usability.