Selling the Glock 21 to existing Glock owners was a relatively easy task. In 1990, the world of the .45 ACP cartridge was turned upside down. For more than seventy years the domain of the Colt 1911, a ...
In 2007 Glock released a new version of the Glock 21, the Glock 21 SF. Designed to compete for a Department of Defense contract, the Glock 21 SF (Short Frame) had a smaller backstrap to more readily ...