I used to have a glock 23 .40 cal for my personal carry. I sold it. For duty carry they issued me a glock 23 so I was very familiar with this gun. Ahh the memories. It is a reliable gun IMO and I have never had any problems with it (misfires, stovepipes, ect.). It's fairly lightweight and concealable. I'd rather have a .40 than a 9mm and if I could afford it I'd rather have a .45