The Charging Handle for the Glock 21 Gen 1-5 aids with racking the slide.Instruction is simple and requires no permanent modifications to your firearm and takes minutes to install without the need for a gunsmith.This is also compatible with the Glock 20 30 40 and 41 as well.Order your Glock Upper Charging Handle online today!Searching for 9mm? Score big savings when you shop our large selection of cheap 9mm ammo for sale.Need new range accessories? Save big when you shop our online selection of Firearm Cleaning Supplies.