I have a Kimber, Crimsom Carry chambered in 45-ACP. This is a pistol you should consider if you want a 45-ACP for a carry pistol? I would hope the red laser beam would scare someone bad enough that I would not have to pull the trigger.
After you pull the trigger, there would be a ton of legal matters to deal with.
I have pulled a pistol for self defense one time in my life. The person ran away and I never fired a shot. I was not harmed but had I not had a pistol that night???
That was 20+ years ago and I still remember that night very well. The man was about 6 to 8-feet away when I came to full draw and ****ed the hammer on my pistol. I came so close to pulling the trigger, lucky for me and him he turned 180-degrees and ran away.