Hi everyone! Just registered on the forum and looking for a little help. I have a G19 Gen 3 that's my primary carry/bedside gun. My wife is finally warming up to the fact that she needs one for herself. Problem is, she has really short, carnie hands. My question: has anyone handled a gen3/gen4 (without any backstrap installed) side by side? Is the grip diameter significantly smaller? I'd like to have commonality of caliber/magazines for all the reasons you already know. Thanks in advance!