Understanding the Glock 30 G30S G30SF G30 Gen 4
Gray_Wolf. Premium Member. Joined May 25, 2011. 567 Posts. #3 · Apr 16, 2014. Glock 30 and 30SF are gen 3 guns SF means short frame so the grip is more similar to gen4. (smaller) Gloxk 30S has G30SF frame but with a thinner slide. Best option for carry. Gen4 30 is similar to 30SF is grip size but has gen4 changes/upgrades.