OpticsPlanet is the best source for Safariland Glock 21 holsters. OpticsPlanet sells the entire Safariland holster list, so if there is a particular Glock holster by Safariland that you need, we are certain to carry it. Additionally, you can search the Glock holsters page for other Glock 21 holsters we may carry. If you would appreciate any support in picking a holster for your Glock 21 handgun, our product experts will be happy to give you a hand. Being one of the largest holster stores in the world, we supply more Glock holsters than pretty much every other online retailer. Also be sure to pay a visit to our large selection of Glock add-ons & accessories. Whether you require a Safariland holster for a Glock 21 or any other handgun, OpticsPlanet is the place to go!