The Glock was the fastest selling pistol of the 1990's. This DVD shows, in detail, easy-to-follow instructions for disassembly and then reassembly of the Glock series of pistols. Complete attention to proper nomenclature of parts and how they function. This useful information applies to all Glock handguns: Glock 17, 17L, 19, 20, 21, 21SF, 22, 23, 26, 27, 29, 30, 30SF, 31, 32, 33, 34, 35, 36, 37, 38, 39.