There are a few Glock models with longer than normal slides and barrels.
One is the G17L which is now being made again. Using these longer Glocks shooters gain well over 100 feet per second in the longer barrel. Many shooters use tactical thigh holsters, so they do not have drawing difficulties with these longer guns.
We had a chance to see all of the Glock models in one place so here they are side by side to compare the: Glock 27 subcompact (Overall length 6.29 in.), Glock 23 compact (Overall length 6.85 in.), Glock 22 standard size (Overall length 7.32 in.), Glock 35 tactical long slide (Overall length 8.15 in) and Glock 17L competition longest slide (Overall length is 8.85 in. )