I have one marked police carbine, it had a scope and no rear site when I got it, I will tell you that is the most accurate short range gun I have, it amazed me how consistently accurate it is. I would trust my life with it, a few times with a new mec gar mag it would choke on hollow points with evidence of them getting a little smashed up on the feed ramp, but solids it is utterly reliable. It has not been shot much and I baby it.
I took off the scope and replaced the rear sight of course.
It is my trusty companion on hikes.