I don't guess I know much but I have been carrying concealed since I was 16 and I am now 71. I couldn't tell from the picture how they fasten to the gun but a belt hook for a Colt auto.45 goes underneath the right grip panel.Before I knew about Barami hip grips I would tape a popsicle stick to the grip of a small revolver and I had a belt hook for a Colt auto. The S&W BG380 is a true DA so I would not worry about carrying it with one in the barrel with a belt hook. It is not a SA striker fired with a sorry trigger. Larry