The Glock 30 is Glock's subcompact pistol, chambered in 45 Auto. Offered in four variations - 30 Gen3, 30 Gen4, 30 SF, 30S - the compact design and simple operation of the Glock 30 allow smooth drawing in a .45 caliber pistol. With all of these advantages, especially because of its compact dimensions, the G30 is the first choice of plainclothes officers and security personnel in the US.