I recently built two ARs specifically to run in a super safe mode. Obviously you need to make changes to the lower (LIKE ADD A SUPER SAFETY), but what would be your dream build for the rest of the gun. I wanted to see how far the AR-15 platform could be pushed toward a squad automatic weapon/auto rifle. I like ripping Magpul D60 drums.
If you want to see what I built I threw them up on a Youtube channel. Be warned I have a strange sense of humor (If you couldn't tell by my user name).
https://www.youtube.com/@phallicarms